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Many characters of SpongeBob SquarePants have held antagonistic roles in various episodes, even though they are normally portrayed as heroes, or at the very least, not villainous. This is a list of antagonistic traits shown by otherwise good characters. This list doesn't include Plankton, the Flying Dutchman, Man Ray, Dirty Bubble, Bubble Bass, or any other characters who are already evil most of the time.
Antagonism is behavior that purposefully hinders the other character or characters from getting what they want.
Any episodes in bold are where a character serves as the main antagonist of that episode.
Any episodes in underlining are where an antagonism may or may not be an antagonism, such as if it was simply an accident, retaliation, or self-defense.
|Character||Antagonisms (all)||Main Antagonisms|
|Eugene H. Krabs||85||27|
|Patchy the Pirate||6||0|
|Potty the Parrot||3||0|
|Larry the Lobster||2||0|
Keep in mind, SpongeBob is usually a good person with an overwhelming sense of optimism and magnanimity, but these traits do not mean that he is safe from antagonism, including being annoying. He can cause very bad things to happen and can sometimes make the situation even worse.
- In "Ripped Pants," he annoys everyone by repeatedly ripping his pants, continuing to do this after the joke becomes old. Later, he even uses drowning just to make another joke.
- In "Pizza Delivery," after getting lost in the desert due to his poor driving, he and Squidward are on the verge of starvation, but he repeatedly refuses to let Squidward eat the pizza they were delivering. He also refuses to let go of it at the risk of them both being sucked into a tornado.
- In "Sandy's Rocket," SpongeBob, convinced by Patrick about the existence of aliens, hijacks Sandy's spaceship, and ends up joining him in catching every Bikini Bottomite (who they misinterpret as aliens) with Sandy's net gun, including Sandy. Afterwards, SpongeBob suspects Patrick of being an alien, getting him to shoot himself with the gun.
- In "Opposite Day," he and Patrick break into Squidward's house and later annoy Squidward's realty agent to the point where she refuses to let him sell his house.
- In "Employee of the Month," he destroys Squidward's alarm clocks, hoping to get him to wake up late. He then sets up a bunch of traps for Squidward while running back to the Krusty Krab. He also ends up destroying the Krusty Krab while trying to prove himself a better employee than Squidward by competing in a cook-off in which they flip as many Krabby Patties as possible.
- In "Walking Small," he accidentally helps Plankton to drive everyone away from the beach so that he can build the Mega Bucket.
- In "Mermaid Man and Barnacle Boy II," he attacks the Atomic Flounder even though he's retired, making him angrily incinerate Barnacle Boy's face. This may not be antagonism because he took Mermaid Man's joking remark about the Flounder "going back to crime" literally.
- In "Dying for Pie," SpongeBob, for unknown reasons, performs open-heart surgery on Squidward and pokes it, making it squirt out blood. When Squidward asks SpongeBob if he's sure he should be poking his heart, SpongeBob arrogantly asks who's the doctor here, even though he clearly has no knowledge on how to be a doctor.
- In "Squirrel Jokes," he performs insult comedy about squirrels. Although Sandy asks him to stop, SpongeBob disregards her request and continues to do so for his career.
- In "Pressure," he makes fun of Sandy for being a land creature. SpongeBob also causes Sandy to take off her helmet as they still were making fun of her without caring, which almost causes her to suffocate to death.
- In "Gary Takes a Bath," because Gary resists taking a bath, SpongeBob goes to the extreme measures of making the bath come to him, which involves him soaking up the water in the bath and spitting it at Gary, though it fails and SpongeBob ends up having to take a bath instead.
- In "The Secret Box," SpongeBob, disguised as a burglar, breaks into Patrick's rock and steals his secret box even though Patrick tells him that he is not allowed to see his box.
- In "Sailor Mouth," he and Patrick use foul language. May not count as antagonism because they didn't know they were using foul language.
- In "Sandy, SpongeBob, and the Worm," he threatens to trip Sandy if she does not admit that he was right while both are running for their lives from the Alaskan Bull Worm.
- In "Just One Bite," he forces Squidward to eat a Krabby Patty, even though Squidward does not want to. SpongeBob then annoys and stalks Squidward until he gives in.
- In "Nasty Patty," he gleefully helps Mr. Krabs create a tainted patty to poison the health inspector.
- In "Mermaid Man and Barnacle Boy IV," after Mermaid Man leaves his belt at the Krusty Krab, after only one attempt to return the belt, SpongeBob decides, even though he thinks otherwise, to keep the belt until after work. He then proceeds to play with the shrinking device. When Squidward (rightfully) attempts to call Mermaid Man to tell on SpongeBob, he shrinks him out of desperation. He selfishly ignores Squidward's demands to get Mermaid Man's help, fearful that Mermaid Man will kick him out of his fan club. He eventually shrinks everyone in Bikini Bottom, still fearful that they will tell Mermaid Man on him (he ironically shrinks Mermaid Man himself later on).
- In "Can You Spare a Dime?," SpongeBob grabs Mr. Krabs by the throat and shakes him furiously.
- In "Krab Borg," when he thinks that Mr. Krabs was a robot after watching a robot horror movie, he tries to find evidence that he was a robot by calling him (from the steps of being a robot) to Squidward. When Squidward believes Mr. Krabs is a robot too (by a minor incident involving Mr. Krabs getting salt in his eyes, the tongs in his hand and the batteries in his pocket), they make a truce to torture him, especially by destroying his objects aside from Cashy. But after being asked by Squidward how the movie ended, SpongeBob felt guilty and abandons Squidward, getting him in trouble with Mr. Krabs.
- In "Party Pooper Pants," he cuts off Squidward's house cables in order to get him to the party and scolds anyone who would mess the schedule. When SpongeBob gets locked out and interprets his party ruined, he tries to ruin it (oblivious that they were having fun).
- In "The Great Snail Race," he ruthlessly overworks Gary in hopes of him winning the race. He doesn't let him have breaks and even overworks Gary when asleep. This is the first time SpongeBob has had an extremely antagonistic role. While SpongeBob didn't do so with malice intent, it was still very excessive of him to do so, and it would be considered animal cruelty. Earlier, he makes a sexist comment, making Sandy kick his butt at the end of the episode. Some can call this one of SpongeBob's biggest antagonism in the series.
- In "Mid-Life Crustacean," he and Patrick got Mr. Krabs in trouble with his mother for the panty raid they did in her house. He also didn't tell Mr. Krabs that they were in his mother's house.
- In "Missing Identity," he scolds Patrick just for failing to say "Hi" to him. Later at the dumpster, when Patrick sees his name tag on the back of his shirt but does not remember due to his stupidity and SpongeBob turning around, SpongeBob angrily tells him that he is not helping him and he tells him to return to his rock.
- In "Pranks a Lot," he and Patrick trespassed into everyone's houses, scared everyone, and attempted to burn Mr. Krabs' money.
- In The SpongeBob SquarePants Movie, he ruthlessly scolds Mr. Krabs because Mr. Krabs didn't make him manager of The Krusty Krab 2, while intoxicated on ice cream. He calls his new monster friends hideous and disgusting, which makes them sadly go back to the trench.
- In "Have You Seen This Snail?," he constantly neglected and yelled at Gary even though he was trying to tell SpongeBob to feed him, causing Gary to leave him.
- In "Karate Island," SpongeBob becomes an arrogant jerk towards Sandy after he is crowned "King of Karate" in Karate Island (despite the whole thing is a scam) and got carried away.
- In "Bummer Vacation," SpongeBob becomes psychopathic towards Patrick when he meets Krusty Krab employee Patrick in his rock.
- In "The Thing," he and Patrick enter Squidward's house uninvited and annoy him by asking many questions. They also inadvertently injure Squidward repeatedly while they think he is Smelly.
- In "Driven to Tears," SpongeBob attempts to turn Patrick in to the police simply for going half a mile above the speed limit which is 40 mph. This fails when Patrick stops the boatmobile, which makes the cop see that Patrick is driving 40 miles under the limit, and the cop threatens to turn SpongeBob in. He later tears up Patrick's license out of jealousy, causing Patrick to almost be imprisoned for littering (which would never happen in real life). However, he confesses to the “crime” and takes Patrick’s place in jail.
- In "The Pink Purloiner," SpongeBob accuses Patrick of stealing Ol' Reliable, and uses multiple methods of interrogation, such as using Confess-A-Bear, stalking him, and disguising as a billionaire. In reality, Patrick was making him a new net, and SpongeBob leaves his net on the bus every week.
- In "Squid Wood," he constantly annoys Squidward by asking him to play with him (oblivious that Squidward didn't want to). Eventually he makes a ventriloquist dummy of Squidward which starts to steal Squidward's life.
- In "Waiting," SpongeBob becomes so overly fixated on waiting for a free toy which comes with the cereal boxes he purchased from the mailman to the point that he starts being mean to Sandy (by grabbing Sandy by the arm and slamming her into the ground before telling her in a very rude tone that he is busy), Gary (by neglecting to feed Gary), and Patrick (by lashing out at Patrick for no reason). Later on when Patrick pushes the button on the toy and springs come out, SpongeBob furiously yells at Patrick for "ruining" his toy.
- In "To Love a Patty," he kept Patty, a formerly perfect Krabby Patty, from harm's way, oblivious and disregardful to her stench and his friends' warnings. He also crops several clams into pieces for being near Patty.
- In "Breath of Fresh Squidward," as SpongeBob was surprised that Squidward would be pogo-dancing with Patrick, he angrily scolds Squidward for taking his Employee of the Month award and for being friendly to Patrick. He then orders Squidward to leave the party, even though the party is for Squidward. SpongeBob, feeling guilty for what he did to Squidward, apologizes to him and, not knowing that Squidward is being electrocuted, slaps his tentacle, electrocuting him. Patrick, thinking that it's funny, touches SpongeBob, electrocuting him as well. After the electric fence is destroyed, SpongeBob and Patrick (who become grumpy like Squidward) argue with Squidward (who is grumpy once again).
- In "The Krusty Plate," in an attempt to remove the spot from a plate, he ends up causing a vortex around the Krusty Krab, and eventually causes an explosion which destroys the restaurant.
- In "Blackened Sponge," after receiving a black eye, he lied to anyone he came into contact with that he got the black eye from Jack M. Crazyfish and acted arrogant about it.
- In "House Fancy," he hurts Squidward's toenail and removes it in a gruesome manner and seems completely oblivious to this. He also destroys Squidward's house, though this actually causes Squidward to win the House Fancy competition.
- In "A Life in a Day," after being addicted to "Living like Larry" in a motorcycle chase, SpongeBob did a dangerous stunt that involves being harpooned to Ripper's Reef. This left to him and Patrick (along with Larry) injured, and after all this, SpongeBob never learned his lesson, making Larry chase him out the hospital.
- In "Boating Buddies," he chases Squidward and causes him to speed and get sentenced to a day in boating school. He also makes a very creepy face when he is staring and breathing heavily in Squidward's face. Throughout the episode, he also repeatedly harasses and annoys Squidward.
- In "Grooming Gary," SpongeBob made Gary wear scratchy fancy outfits in order to win the pet show, but instead causes Gary and every other snail and worm to start a rampage at the pet show. Some could forgive him for his actions, because he only did this to win the pet show.
- In "Porous Pockets," upon receiving money, SpongeBob began to care for his money over anything, including his friendship with Patrick. Before SpongeBob lost all his money, Patrick warned him about him overspending his money and that everyone in his pineapple were strangers (friends in SpongeBob's case), yet SpongeBob disregarded this.
- In "Choir Boys," SpongeBob digs up a pothole to get Squidward's attention, has him pinned down by jellyfish, writes him a ticket for frowning and not wanting him to listen to his song, and ultimately upstages him in the end. Unlike most of SpongeBob's other actions, this was purposeful on his part.
- In "Cephalopod Lodge," SpongeBob and Patrick got Squidward banned from the Cephalopod Lodge, the one thing that makes his life bearable, by spying on him and then revealing themselves to the club. They also had their own club with a painful initiation (by using a jellyfish to sting someone's tongue), which injures Squidward (who the two had to kidnap so he could join). After Squidward gets rejoined, SpongeBob and Patrick get him re-banned and did the painful initiation to him again.
- In "Squid's Visit," SpongeBob begs Squidward to visit his house (to the point of stalking), but Squidward refuses. SpongeBob then makes the inside of house look exactly like Squidward's then steals Squidward's vacuum cleaner for him to come and get it. Squidward demands his vacuum, but SpongeBob very bluntly ignores the demands, instead trying everything he can to make sure Squidward stays. SpongeBob forces Squidward to stay so long that Squidward's house ends up burned down because Squidward had left a casserole in the oven (despite Squidward telling him he needed to get home pronto for that reason). This is one of SpongeBob's most antagonistic roles so far.
- In "Shell Shocked," SpongeBob broke Gary's shell and he tried to get a replacement shell for him at Angry Jack's Shell Emporium. Unfortunately, he broke all the shells there (though Angry Jack wasn't mad at first until that point.) Luckily, SpongeBob was able to get Gary a shell: Mr. Krabs' shell. As punishment for starting the problem, Gary locks SpongeBob out.
- In "Pineapple Fever," when Squidward was hungry, SpongeBob assaulted him as he prevented him from crossing the line he created. But as Squidward continued for his hunger, SpongeBob went after him. They (along with Patrick) began to start acting like animals fighting over food.
- In "Tentacle-Vision," Squidward starts filming his own TV show at home, however, SpongeBob along with all the other Bikini Bottomites barge into Squidward's house uninvited and continually interrupt the show and eventually ruin it.
- In "A Pal for Gary," he scolded Gary for "being mean" to Puffy Fluffy, when it is plain to see it is Puffy Fluffy who is being mean to Gary, and continues to do so even when the now monstrous Puffy Fluffy is clearly trying to devour Gary. Puffy Fluffy drops Gary and grabs SpongeBob and prepares to eat him instead, but Gary drives him away. Instead of thanking Gary, SpongeBob ungratefully scolds him for chasing Fluffy off. This is generally considered to SpongeBob's most antagonistic role yet, and the very few times in the series to portray him as the main antagonist.
- In "Squidward in Clarinetland," he repeatedly touches Squidward's clarinet despite being told not to do so many times.
- In "Rodeo Daze," he captured people to help him save Sandy from a rodeo against their will.
- In "The Abrasive Side," he got an abrasive side thinking it would help him stop being helpful to everyone, but it caused him to become very rude and mean, in addition to being able to say "no." Though this might not count as antagonism as SpongeBob wasn't being mean on his own free will.
- In "The Other Patty," he created the Flabby Patty restaurant just to get Mr. Krabs and Plankton to cooperate and only supported his own philosophies. The two end up chasing him afterwards for what the two had to go through.
- In "The Hot Shot," he drove in a high speed chase.
- In "Home Sweet Rubble," SpongeBob neglects Gary because he is too busy trying to sort out his decaying house.
- In "The Good Krabby Name," he and Patrick destroy a lot of stuff, injuring people in the process.
Although he is unintelligent and is usually carefree, magnanimous, and generally detached, Patrick has frequently acted cold, shrewd, selfish, and even psychotic at times. He will ignore rules and warnings to do whatever he wants resulting in trouble. Patrick can be very dangerous when angry.
In the original series, he was a lot kinder and more well-meaning despite being unpleasant at times, but in the Paul Tibbitt series his personality became exaggerated and now, he has become significantly more antagonistic (and also a lot dumber than he was previously). In later seasons, he has been redeemable.
- In "Tea at the Treedome," Patrick's fancy advice gets SpongeBob dehydrated in Sandy's treedome. As Patrick was manually helping SpongeBob, he soon becomes dehydrated as well. Him drying out is karma, but his actions can be forgivable since he is at least trying to help his friend.
- In "Jellyfishing," oblivious to the fact that Squidward can't hold the net due to his bandages, he forcefully jams the net through his tentacle, putting Squidward in extreme pain. Also, he does not seem to notice that he accidentally hurt Squidward.
- In "Sandy's Rocket," he and SpongeBob hijack Sandy's spaceship and catches every Bikini Bottomite (who they misinterpret as aliens) with Sandy's net gun. When Sandy finds out about this, the two shoot her. Afterwards, Patrick shoots himself with the gun after SpongeBob suspects him of being an alien.
- In "Nature Pants," when SpongeBob decides to live away from home, a hurt and crazed Patrick attempts to capture him and keep him in a jar on his mantle. When SpongeBob escapes by jumping into the jellyfish hive, Patrick gives up, snaps his net in half, and walks home crying.
- In "Opposite Day," he and SpongeBob break into Squidward's house and later annoy Squidward's realty agent to the point where she refuses to let Squidward sell his house. They also didn't care about Squidward's misery since they only told Squidward they "hate" him (which means they love him in opposite day). As punishment, Squidward chases them out of town with his bulldozer.
- In "I Was a Teenage Gary," after he hears Gary, SpongeBob, and Squidward as snails meowing, he exclaims "Will you clam up?!" and aggressively throws a boot at Squidward, knocking him down from the wall.
- In "Suds," though Patrick would help SpongeBob when he got the suds, he told him that the doctor's was a bad place and gives him bad treatments. Later, Sandy realized that Patrick was giving him bad treatments and decided to get SpongeBob to the doctors, as well as telling Patrick that he should be arrested for impersonating a doctor, which is a criminal offense. At the end of the episode, Patrick becomes jealous of SpongeBob getting a lollipop for his treatment and pretends to get sick. Purple Doctorfish gives Patrick the Starfish treatment (which is an aching treatment for sea stars), as karma for giving SpongeBob bad treatments and impersonating a doctor.
- In "Valentine's Day," after SpongeBob fails to produce a gift for Patrick (which was in reality due to scallops attacking and stalling Sandy's chocolate balloon, which was his intended gift), he concludes that SpongeBob must hate him (especially after finding out that SpongeBob gave gifts to everyone else, including somebody he had just met that morning) and goes on a violent rampage throughout the carnival, and even noisily eats a terrified child's lollipop in front of him. He eventually corners everyone (including SpongeBob and all the innocent bystanders) at the end of boardwalk, seemingly with the intention of killing them. Once Sandy shows up, Patrick realizes that SpongeBob had indeed gotten him a gift and his anger is forgotten.
- In "Hooky," he puts SpongeBob in danger by playing in the hooks, ignoring repeated warnings from Mr. Krabs not to do so. Karma got him when he was caught and placed in a tuna can.
- In "Life of Crime," he accuses SpongeBob of eating his chocolate bar (even though he had just eaten his own a moment earlier). He then threatened to tell the police on SpongeBob.
- In "Dumped," he became selfish to SpongeBob after he got Gary (though Gary was only into him for his cookie in the pocket) and shows no remorse for doing so. This is the first time in the series to portray Patrick as a villain.
- In "I'm Your Biggest Fanatic," he touched stuff in the convention even though the police told him not too and also captured Jeffrey Jellyfish, even though he told SpongeBob that hero worship is unhealthy.
- In "Pressure," he, SpongeBob, Squidward, and Mr. Krabs made fun of Sandy to show that sea creatures are better than land creatures.
- In "I'm with Stupid," SpongeBob volunteered to act stupid around Patrick's parents in an attempt to improve their opinion of Patrick. However, Patrick takes the act too far, to the point where he actually begins to believe that SpongeBob really is stupid. All the teasing and embarrassment from Patrick and his "parents" eventually proves too much for SpongeBob, who runs away screaming and crashes through the wall of Patrick's house.
- In "Sailor Mouth," he and SpongeBob use foul language. This may not count as antagonism since they didn't know they were using bad words.
- In "Sandy, SpongeBob, and the Worm," he makes everybody push Bikini Bottom somewhere else, making the worm fall on the city, crushing everybody except SpongeBob, Sandy, and possibly a few Bikini Bottomites since the worm bites off one fish's (who is clearly not pushing the city) buttocks again. Considering the danger the worm could bring to the city, this action could be justified.
- In "Club SpongeBob," after weeks of starvation, SpongeBob and Patrick are presented with food from a falling aircraft. Patrick is oblivious of Squidward's interest in eating the smoked sausages, consuming them as Squidward sniffs them. He and SpongeBob then take away the table of food from Squidward before he even took a bite. When the conch refused to let Squidward eat, Patrick tried asking it if Squidward could have a sandwich. He then asks if he could have it, with the conch saying yes. If the conch was automatic, Patrick took away Squidward's chance of having something to eat.
- In "Rock-a-Bye Bivalve," he fails to do his fair share of work in taking care of Junior, claiming that he's too tired from work. Each night, he promises to assume responsibility for the baby the following night, but repeatedly fails to do so, even when SpongeBob shows him the obscene amount of diapers he has to change. At midnight, SpongeBob finds out that "work" consists of Patrick watching TV under his rock, eating junk food, and neglecting Junior.
- In "New Student Starfish," he drew a cruel picture of Mrs. Puff and passed it on SpongeBob's desk, making her think SpongeBob was responsible for the picture, which made him cost one of SpongeBob's "Good Noodle Stars," and made SpongeBob sit in the back of the classroom. While SpongeBob was sitting in the back, he throws things at him and fires spitballs at him to get his attention, just to say "hi," making SpongeBob angrier, but this only gets him into more trouble with Mrs. Puff. Later in the corridor, he tells SpongeBob that he finds it funny, making SpongeBob lash out at him. He clearly does not care that he got SpongeBob into trouble because he angrily responds, "Who cares about a stupid star?" Despite this, during detention, he finally shows remorse for what he did, when the light bulb warming Roger dies out. This is probably Patrick's third most antagonistic role.
- In "Mid-Life Crustacean," he and SpongeBob got Mr. Krabs in trouble with his mother for the panty raid they did in her house. He also did not tell Mr. Krabs that they were in his mother's house.
- In "Pranks a Lot," he and SpongeBob trespassed and scared everyone, and attempted to burn Mr. Krabs' money. However, when Krabs doused the fire, they were busted nude. Though Krabs claimed he was okay with it, SpongeBob and Patrick got punished by being seen nude in public shown by Mr. Krabs, which viewers are the people the two pranked.
- In The SpongeBob SquarePants Movie, Patrick, bragging about SpongeBob's capabilities, reduces SpongeBob's required days to get King Neptune's crown from 10 to 6, making SpongeBob and Mr. Krabs to clobber him and Mr. Krabs to strangle him. He tries to further reduce the required days to 5 while getting strangled by Mr. Krabs, even after King Neptune has already settled for 6 days. This action would be forgivable, if it wasn't for the punishment that would be inflicted making it past the deadline.
- In "Wigstruck," he attacks SpongeBob because he thought that SpongeBob's wig was a monster. A similar case also happened in "The Good Krabby Name."
- In "Hocus Pocus," he tries to eat the ice cream cone that SpongeBob believes is Squidward. Even after SpongeBob reveals this Patrick's only response is to eat it faster citing that the octopus turned ice cream tasted good.
- In "Driven to Tears," he eats SpongeBob's flash cards, making him fail. Then he attends Mrs. Puff's boating school, suspecting that Mrs. Puff was setting up SpongeBob's tests so he would constantly flunk, and passes almost effortlessly. Afterward, he rubs his license in SpongeBob's face every chance he gets, ridiculing SpongeBob and calling himself a "driving genius" (despite having ran red lights and made dangerous U-turns); SpongeBob finally gets sick of it and destroys his license, Patrick is arrested for littering and sentenced to prison time (which would never happen in real life). However, SpongeBob confesses to the "crime" and takes Patrick's place in jail. The two friends reconcile when SpongeBob is released from prison.
- In "Rule of Dumb," he is crowned King of Bikini Bottom and becomes a ruthless tyrant, thinking he has the right to take whatever he wants, regardless of what harm it brings to others, to the point of outright stealing. After weeks of ruining everyone's lives for his own personal gain, Patrick goes too far by hiring a construction crew to move Squidward's house (without permission from Squidward) in order to set up a Ferris wheel. Squidward starts a revolt against Patrick among the townspeople, and Patrick begins planning to kill (or so it seems) Squidward in order to show his power, even scaring SpongeBob away at this point. When Patrick looks into the mirror and sees a monstrous version of him, he becomes horrified by what he has become, decides that friendship is more important than power, and happily abdicates the throne when it is discovered that he is not the true king. This is Patrick's fourth most antagonistic role.
- In "Sing a Song of Patrick," he uses a hundred dollar bill that he found in SpongeBob's wallet to enter a contest. Fully acknowledging that the money belonged to his friend but taking it anyway. Patrick's song also caused a ton of damage on Bikini Bottom, and causes the death of the band that performed it, which Patrick does not seem at all bothered by.
- In "Pat No Pay," he claims that he doesn't have the money to pay for his bill despite saying that he could pay for it. When he is forced to work to make up for it he ends up destroying the restaurant in the end.
- In "The Battle of Bikini Bottom," after SpongeBob realized Patrick never washed his hands, they made a war with SpongeBob being clean and Patrick being dirty.
- In "SpongeHenge," he kicks SpongeBob out of his house just because a jellyfish stung him and calls SpongeBob a negative influence.
- In "The Splinter," he once again impersonates a doctor. When he does unrelated treatments on SpongeBob, he threatens to heave him be when he was questioned. When he was able to find the splinter, he used a hammer to jam it further into SpongeBob's thumb, causing it to swell. He then infected the injury with trash and left.
- In "No Nose Knows," he got a nose job to be able to smell, but soon afterwards, Patrick became a rude, inconsiderate jerk who did anything to get rid of a bad smell. This soon led to his friends nearly running him out of town, but instead they just got rid of his nose.
- In "The Card," he promises a valuable trading card to SpongeBob and is completely careless when handling it and eventually destroys it right in front of SpongeBob knowing that he promised it to him. The same episode also heavily implies that Patrick acts stupid on purpose to get away with his sociopathic behavior. This is one of Patrick's most villainous roles in the series.
- In "To SquarePants or Not to SquarePants," he didn't recognize SpongeBob when he was wearing Round Pants and even kicked him out of his pineapple. He even told SpongeBob that he is not SpongeBob SquarePants with his Round Pants on him. It was technically his fault why SpongeBob was wearing Round Pants in the first place as he lets SpongeBob wait too long on the phone with his spluttering, which eventually made the washing machine shrink his pants.
- In "Shuffleboarding," Patrick placed two kids in jail for "loitering." SpongeBob finds that illegal until a security guard throws away a Krabby Patty. The two then put nearly everyone else in jail. At the end of the episode, Mermaid Man and Barnacle Boy gets chased by the jailed Bikini Bottomites (though Patrick was responsible for this.)
- In "Sand Castles in the Sand," SpongeBob and Patrick declared a war with SpongeBob with their sand creations, making this one of the rare moments when SpongeBob considers Patrick his enemy, similar to "The Battle of Bikini Bottom."
- In "Tentacle-Vision," Patrick, like other Bikini Bottomites, barge into Squidward's house uninvited and eventually ruin his show.
- In "Stuck in the Wringer," he gets SpongeBob stuck in his wringer by super gluing him in. This gets SpongeBob to get kicked out of his job, sustain multiple injuries, unable to eat anything, and later to develop mental illness. He also selfishly eats SpongeBob's ice cream (as the wringer made it so he couldn't), gloats his winnings at the carnival in SpongeBob's face. The following day, after SpongeBob lashes out at him, he wants to forget about SpongeBob but he realizes he cannot so he enters his house to find the mentally ill SpongeBob. Horrified by this, he blames himself for super gluing SpongeBob in his wringer and starts crying but his tears melt the glue and frees SpongeBob from his wringer.
- In "Greasy Buffoons," he eats SpongeBob, believing him to be a "Crunchety Munchety" at the end of the episode.
- In "Yours, Mine and Mine," he shows a much more selfish nature than normal. He refuses to share a toy SpongeBob technically bought. He had been hungry, but had no money, so SpongeBob bought him a meal to share and Patrick ate all of it. He then complained he didn't get a toy so Mr. Krabs quickly made one. SpongeBob loves it but Patrick, despite seconds before hoarding the meal all to himself actually tells off SpongeBob and says that they had been sharing the meal so he wants a turn with the toy, his idea of sharing apparently being that SpongeBob pays and he gets. He keeps it all night and the next day refuses to share even for a split second. SpongeBob and Patrick continue to fight over the toy and Patrick ends up saying, "If I can't have it, no one can." He then eats the toy in front of SpongeBob and gives a satisfying sigh. Mr. Krabs tells them he made a lot of the toys because they were so successful, offering to give them both a toy with payment. Patrick says that it's on him this time, only to take SpongeBob's wallet to spend his money. When SpongeBob complains about this Patrick replies, "Have you learned nothing about sharing?," showing Patrick's hypocritical side. This is Patrick's third biggest antagonism in the series.
- In "Back to the Past," he caused many problems whenever he eats the tartar sauce.
- In "Karate Star," he becomes obsessed with his karate chop move that he began chopping various buildings and objects. This may not count as an antagonistic role due to Patrick not meaning to go mad with his power, but he did cause a huge amount of destruction in Bikini Bottom.
- In "Big Sister Sam," he is oblivious to his sister's aggressiveness when she hurts SpongeBob and Squidward and even destroys their houses and he shows no consideration for his friends and even hypocritically accuses them of being mean, when really he and Sam are the ones being mean. He also scolds them for being mad about it. This is Patrick's fifth biggest antagonism in the series.
- In "Sentimental Sponge," Patrick's advice to SpongeBob about savoring his "sentimental stuff" (which was his garbage) gave him a negative effect on him, Squidward, and their neighbor as SpongeBob began to savor more junk.
- In "Frozen Face Off," he betrayed the gang by helping Plankton to open the secret formula. Though this was out of stupidity and not maliciousness.
- In "Oral Report," he caused SpongeBob's oral report anxiety by asking to be moved to the back of the class, falling asleep,yelling "Boring!" and then "Next!" He then starts assaulting him with many obstacles, such as pillows, a treadmill, dressing as Mrs. Puff to give him a detention slip, and saying "Speech" in a chargeful voice. He also broke SpongeBob's underwear goggles, increasing his oral report anxiety.
- In "Ghoul Fools,” he is willing to selfishly allow ghosts to take SpongeBob just to save himself. He later gets his karma when Mr. Krabs hits him in the face with his tongue.
- In "Smoothe Jazz at Bikini Bottom," he eats Squidward's concert ticket for no reason, and later gets into the concert for unknown reasons (possibly by selfishly using Squidward's stolen ticket). He later eats Squidward's and SpongeBob’s backstage passes and goes backstage (presumably with the stolen passes). He also jumps up onstage and blatantly interrupts the concert.
- In "Pet Sitter Pat," he eats Gary's food right in front of him and later bathes him too hard which causes the house to flood. He also chases Gary down with a flame thrower. This is Patrick's BIGGEST ANTAGONISTIC role in the entire series.
- In "Restraining SpongeBob," he constantly annoys Squidward and then attacks him when he thinks he was a monster, completely oblivious that Squidward's sea berry allergy went off.
- In "The Good Krabby Name," he attacks SpongeBob when he thinks he was eaten by a giant Krabby Patty costume SpongeBob was wearing. He and SpongeBob then destroy a lot of stuff, injuring people in the process.
- In "It's a SpongeBob Christmas!," Patrick lays Santa traps around his rock to capture Santa but ends up getting caught in the traps and at the end of the episode, he snags Santa in a Jellyfish Net.
- In "Patrick-Man!," he ran around town falsely accusing people of crimes (even having Mrs. Puff charged for a felony). He then throws SpongeBob at the Dirty Bubble and destroys the Krusty Krab.
- In "Little Yellow Book" he mocks SpongeBob for calling his spatula "Fifi," saying 'yeah, cook me up a Krabby Patty... with good old Fifi' in a demeaning tone. He later throws a tomato at Squidward for reading the diary, even though he read it as well and laughed at his friend.
- In "The Fish Bowl," Patrick was told by Sandy that he was in charge while she is doing her experiment of behavioral psychology. During the experiment, Patrick starts to get carried away with being in charge and selfishly took advantage of his own privileges and took advantage of SpongeBob by making him do whatever he tells him to do. He then torments SpongeBob by spilling the black sand all over the white sand after he has finished counting them. He even eats SpongeBob's ice cream cone and his bowl of ice cream in order to torment him further. When SpongeBob tries to leave, Patrick traps SpongeBob by locking the door and says that he isn't leaving until he says so and Patrick and SpongeBob fight. After Sandy explained everything that's been happening, Patrick realized he was being incredibly selfish to his friend and felt remorseful about his actions. His actions at the end can be considered forgivable, but he was still antagonistic towards his friend.
- In "Sandy's Nutmare," when Sandy learns that her tree is dying, he attempts to chop down her tree for the wood with a hatchet. When Sandy tells him she can save her tree with science, Patrick throws the hatchet, which makes a hole in the Treedome for water to come through. This definitely counts as antagonism, as he was trying to hurt nature in the first place and also said, “Good, we can use the wood,” which showed that he clearly did not care that the tree was dying.
- In "Krusty Katering," he selfishly keeps and seeks to keep all of the Krabby Pâté for himself, and goes on a rampage like a wild animal.
- In "Sanitation Insanity," he impulsively refused to give SpongeBob and Squidward his trash cans and engages them in a trash fight. However, their reckless fighting causes them to spread trash all over Bikini Bottom. As punishment, he, Mr. Krabs, SpongeBob, and Squidward were sentenced to many hours of community service by picking up trash. However, he was not seen picking up trash with the others at the end.
- In "Ink Lemonade," he intentionally keeps scaring Squidward in attempt to get his ink for black lemonade, even having no remorse when Squidward becomes paranoid due to Mildred the sea spider. This is Patrick’s second biggest antagonism in the series.
Squidward has a considerable but not really evil antagonistic side (due to having been nice to SpongeBob before), frequently taking advantage of the situation to stop SpongeBob from tormenting him. He is often treated as unfair and arrogant by citizens of Bikini Bottom and can scare them away with his terrible clarinet playing.
- In "Reef Blower," Squidward, wanting his lawn to look better than SpongeBob's lawn, intentionally kicks the shell on to SpongeBob's lawn. This causes SpongeBob to use a reef blower to remove the shell, inadvertently ruining Squidward's relaxation due to the blower's loud noise and the sand falling on him when he is eating. When the reef blower explodes after sucking all of the seawater, SpongeBob's lawn is clean whereas Squidward's lawn and Squidward himself are filled with piles of sand. To add insult to injury, the shell lands on his nose.
- In "Jellyfishing," Squidward opened the jar that had the jellyfish that SpongeBob and Patrick captured, which caused the jellyfish to sting SpongeBob and Patrick once again. This may not count as antagonism since it was SpongeBob and Patrick's fault Squidward was attacked by the Queen Jellyfish.
- In "Naughty Nautical Neighbors," he turned SpongeBob and Patrick against each other. This backfired when SpongeBob and Patrick began fighting for his friendship. Karma goes back to him when his house is accidentally destroyed by SpongeBob and Patrick and he gets crushed by his door, hurting his back once more.
- In "Culture Shock," he hosts a Krusty Krab Talent Show just so he can become the star. Not wanting SpongeBob to ruin his chances in becoming the star, Squidward coldly rejects his talents. When Squidward eventually performs, the audience hates it so they pelt him with tomatoes. Furious, he yells at them that they don't know talent, only for them to insult him back by saying that he is the one who is not talented, making him storm off. When SpongeBob cleans the stage, the audience likes it and Squidward copies SpongeBob to make the audience like his performance, but to no avail. Left with no other choice, Squidward sadly accepts that SpongeBob is the star, not him.
- In "Squidward, the Unfriendly Ghost," when SpongeBob and Patrick believe they have killed Squidward and that he is now a ghost, he takes advantage of this by making them his slaves. Eventually, SpongeBob and Patrick, after reading a magazine about the Flying Dutchman's death, get the idea that Squidward is being mean and angry because he was never put to rest. SpongeBob and Patrick attempt to bury Squidward, which ultimately brings him to confess that he is actually alive. However, SpongeBob and Patrick still think that Squidward is a ghost in denial and send him to the "great beyond" by trapping him in a bubble, which floats up into the sky where the pelicans are. This is one of Squidward's villainous roles in the series.
- In "Employee of the Month," SpongeBob and Squidward viciously compete with each other for the employee of the month award, both of them trapping each other in hopes of getting to work first.
- In "I Was a Teenage Gary," he forgets to take care of Gary, which nearly resulted in his death. Karma comes back to Squidward as he gets injected with snail plasma, then gets transformed into a snail and gets hit with a boot by Patrick.
- In "Fools in April," Squidward gets so annoyed with SpongeBob pulling playful and harmless pranks on people at the Krusty Krab, and pulls a very cruel and harmful prank on SpongeBob in retaliation. Things blow up in Squidward's face when SpongeBob runs out of the restaurant crying hysterically, and the Bikini Bottomites turn on him. Squidward tries to apologize, but he is physically unable to apologize until the very end of the episode, where SpongeBob has the last laugh: all his friends were standing behind him in his house and witnessed Squidward's apology. As a result, Squidward suffers a mental breakdown and runs off back to his house laughing maniacally after shouting that he had just fooled them as well.
- In "Squid's Day Off," he has SpongeBob stay at the Krusty Krab by himself while he takes a day off, which actually leaves him paranoid.
- In "Dying for Pie," he gave SpongeBob an explosive pie not knowing it was a bomb. For the rest of the episode, Squidward tries to make SpongeBob's last few hours meaningful, however when SpongeBob does not explode, instead of being relieved, Squidward is angry, and tells SpongeBob he wants him to explode.
- In "Patty Hype," he and Mr. Krabs ridicule SpongeBob's idea of Pretty Patties, making him start his own business only for them to laugh even more. Unlike Mr. Krabs, however, Squidward did not get the punishment he deserves as he was not seen again once SpongeBob leaves the Krusty Krab to start his own business. And, at the same time, it is unknown how Squidward reacts when the Pretty Patties become popular.
- In "Grandma's Kisses," he and the customers at the Krusty Krab ruthlessly tease SpongeBob for having a kiss on his forehead given by his grandma. At the end of the episode, it is shown that they have been spying on SpongeBob with his grandma through her house's window.
- In "Pressure," he, SpongeBob, Patrick, and Mr. Krabs made fun of Sandy to show that sea creatures are better than land creatures.
- In "Artist Unknown," Squidward shames SpongeBob's artistic talent because he is jealous of SpongeBob's art being superior to his own. He also takes credit for SpongeBob's work. Later, Squidward wants SpongeBob to make another statue so he can get the credit. But SpongeBob now follows Squidward's "style," so he's unable to make a new statue and reduces the marble block into a pile of rubble instead, causing Squidward to go on a crazed rampage.
- In "Club SpongeBob," he described the club and the Magic Conch Shell as stupid and idiotic. Eventually, SpongeBob and Patrick are rewarded by the conch, so he tries to ask the Conch what food he can eat, but the shell declines his requests.
- In Mermaid Man and Barnacle Boy IV" he slowly approaches the phone to scare SpongeBob and to tell Mermaid Man that SpongeBob stole his belt, ignoring SpongeBob's pleas to not tell him, causing SpongeBob to shrink him out of panic. This may not count as antagonism, considering Squidward was completely in the right in this situation (even if it was out of spite and revenge on SpongeBob for making him get punched by the Muscular Fish).
- In "Can You Spare a Dime?," Squidward gets so furious with Mr. Krabs for accusing him of stealing his dime that he strangles Mr. Krabs' eyes in retaliation, before quitting his job in a rage. But with nowhere to go, Squidward accepts SpongeBob's offer to live in his house until he finds a new job. However, he takes advantage of SpongeBob's hospitality by lying in bed all day, essentially making SpongeBob his domestic slave in his own house, staying so long that the Narrator quits, and not even attempting to find a job. This eventually proves too much for SpongeBob, who for one of the few times in the series becomes angry with Squidward, and soon begins aggressively giving Squidward blindingly obvious hints to get a job, but Squidward still doesn't notice (or more likely, deliberately chooses to ignore) them. Eventually, SpongeBob confronts Mr. Krabs in an attempt to force him to give Squidward his job back, and in the process accidentally reveals that Mr. Krab's first "dime" (a stone-age wheel) was in his pants the whole time, proving Squidward didn't it after all.
- In "Wet Painters," he tricks SpongeBob and Patrick into damaging the Krusty Krab and hurting themselves to attract customers.
- In "The Great Snail Race," he calls Gary a mutt and that he couldn't win the race, which offends SpongeBob. He then continues insulting Gary by saying that Gary has no chance against Snellie and that SpongeBob shouldn't show up in the race. This makes SpongeBob overwork Gary so that he can beat Snellie in the race. He even mocks SpongeBob that Gary would even arrive at the race. In the end, neither Gary nor Snellie win the race but Patrick gives his trophy to Squidward because he knows how much Squidward wants to win.
- In "The Camping Episode," he nearly endangered SpongeBob and Patrick by doing the opposite of their advice. Instead, he was endangered by the sea bear.
- In "The Lost Mattress," he takes credit for SpongeBob and Patrick's gift for Mr. Krabs, and then endangered Mr. Krabs by putting his mattress in the dump. When it's revealed that the new Mattress put Krabs in a coma, Squidward threatens to murder SpongeBob if he didn't return Mr. Krabs' mattress back (only to be stopped by the police). He then puts SpongeBob and Patrick in danger of being eaten by the guard worm. Instead, in every attempt, he gets mauled by the worm. Karma gets back at him in the episode's end.
- In "Funny Pants," he cruelly tricks SpongeBob into believing he will break his laugh box if he does not stop laughing. He does this in order to get peace from SpongeBob laughing. This causes SpongeBob to enter a sad and tearful state. When Squidward gets sick of him crying, he confesses his trick to SpongeBob. He continues laughing until he breaks his laugh box and gets sent to the hospital. While there, he realizes that his laugh box was cut out of him, and SpongeBob gave him some of his laugh. This freaks Squidward out and causes him to run out through the hospital wall.
- In "Krusty Towers," Squidward took his revenge on Mr. Krabs too far, which ended up destroying the Krusty Towers and injuring himself, Mr. Krabs, SpongeBob, and Patrick.
- In "Once Bitten," he made a fence to guard him from Gary, though the snail ends up having one stalk in his tail, causing him to bite Squidward and everyone else ravenously. And at the end of the episode, he pretends to be a zombie even though he knew that the disease did not exist.
- In "That's No Lady," he and Mr. Krabs antagonized Patrick (as Patricia) by romantic offers (including dates). The two didn't recognize that "Patricia" was Patrick until SpongeBob revealed it. This may not count as antagonism as Squidward only did so because he has a crush on "Patricia".
- In "Good Ol' Whatshisname," he steals What Zit Tooya's wallet, runs across a red light in front of a police, giving him 10 years in prison.
- In "A Flea in Her Dome," he ignored SpongeBob and Patrick's pleas to help them when the fleas in Sandy's treedome were attacking them.
- In "Slimy Dancing," he cheats in the dance show by controlling SpongeBob.
- In "What Ever Happened to SpongeBob?," not only did he cruelly drive SpongeBob out of town, but unlike Patrick, Sandy, Gary, and Mr. Krabs, Squidward feels no remorse for it and is delighted he's gone. He goes as far enough to purposefully destroy Sandy's invention (to look for SpongeBob) with a mallet so that they couldn't find SpongeBob. In fact, he only agrees to bring SpongeBob back because Mr. Krabs promised to give him a jeweled ornamental egg if he succeeds. In the end of the episode, karma comes back to him when he slips on a greasy spatula, accidentally throws his egg onto SpongeBob's head thus breaking it, causing SpongeBob's memory to return and he decides to stay in Bikini Bottom, so Squidward throws his brain in the trash can.
- In "Suction Cup Symphony," when he dropped SpongeBob and Patrick off the window, he broke Patrick's butt.
- In "The Splinter," he tells SpongeBob that Mr. Krabs will have to kick him out for getting a splinter at work. Despite promising not to tell Mr. Krabs, he kept telling him about it behind SpongeBob's back.
- In "Slide Whistle Stooges," after being told by SpongeBob that he has musical talent with the slide whistle, Squidward began to antagonize other Bikini Bottomites, thus concerning SpongeBob and Patrick. However, Squidward while driving the truck, ends up injured when driving off a cliff. Fortunately, the slide whistle saved Squidward's life as it was lodged in his throat.
- In "To SquarePants or Not to SquarePants," SpongeBob pretends to get a job at the Krusty Krab after Patrick doesn't recognize him with round pants and Squidward becomes a bad influence on SpongeBob by teaching him the wrong things.
- In "Professor Squidward" he pretends he is Squilliam Fancyson, but a fan finds the real Squilliam Fancyson and then Squidward is arrested and sent to prison. However, this may not count as antagonism, considering Squidward didn't even start the whole charade to begin with. He did tell the music headmistress he wasn't Squilliam, but was too tempted by her job offer to correct her again.
- In "Gullible Pants," he lies to SpongeBob about Mr. Krabs' secrets, causing the Krusty Krab to go out of control.
- In "I ♥ Dancing," he gets jealous that SpongeBob has an audition in a musical, and "teaches" him how to dance in order to steal the spot for himself, training SpongeBob to the point of exhaustion. While he wins, he is going to star in Squilliam's musical, and is forced to train to perform a dance that SpongeBob had performed earlier, with Squilliam clearly planning to run him ragged just as Squidward had done to SpongeBob.
- In "The Curse of Bikini Bottom," he lent his lawn mower to SpongeBob and Patrick, hoping that they would kill themselves with it.
- In "A Day Without Tears," after making a bet to SpongeBob that he would not cry for 24 hours, Squidward cheats in the bet by doing things that made him cry. This could be Squidward's most villainous role in the season.
- In "Sponge-Cano!," he complained about everyone else's habits including calling the town "dumb." This led to everyone to sacrifice Squidward to Mount Bikini.
- In “The Curse of the Hex,” He selfishly refuses to give Madame Hagfish a Krabby Patty. This is one of the factors that causes her to curse the Krusty Krab.
- In "That Sinking Feeling," he separated SpongeBob and Patrick's yards from his by drawing two lines and would threaten to destroy them if they kept his house sunk.
- In "Buried in Time," Squidward was fighting with Patrick so he can not put his favorite rock in the time capsule, and treated SpongeBob and Patrick in an enraged and mega abusive tone and movement, he also re digs himself even after the escape from the capsule to find out what Bikini Bottom would look like after or during the 50-year trial. He was also unaware about the future after he dreamed on what it would be in the episode while SpongeBob and Patrick knew it was still 1 day of the present time.
- In "New Fish in Town," he dragged SpongeBob, Patrick, and Howard's homes down a cliff. At the end of the episode, in retaliation, Squidward ends up down the trench.
- In "Big Sister Sam," he nastily tantalized Sam and threatened to dispose her. However, the disputes lead him or his stuff demolished, especially to the fact when Squidward tried to bulldoze her and Patrick, yet Sam was strong enough to demolish SpongeBob's house instead.
- In "Accidents Will Happen," he made it seem like he got injured while working, when really he was only injured when sleeping on the job. Before that was found out he made Mr. Krabs do a lot of ridiculous things to pamper him. He even lied to the OWS Inspector about what happened in the accident. As punishment, he had to pamper Mr. Krabs in retaliation, in the same way Mr. Krabs had to pamper him, only Mr. Krabs has more barnacles.
- In "Squidward's School for Grown Ups," he gets so possessive about Patrick when he becomes friends with him; in fact, he tries to break off their friendship. He nearly succeeds when Patrick grew a "beard" (which was actually a talking brown sea urchin) and stopped being friendly to SpongeBob, but his plans are foiled when SpongeBob performs while dressed as a female viking and makes Patrick cry, so that the sea urchin leaves, and then tells Patrick is was just a sea urchin and reveals himself. After SpongeBob and Patrick are friends again, Squidward gets jealous and angry. He told the audience indirectly that the two were horrible performers, but they turn on him and end up throwing food on Squidward.
- In "Smoothe Jazz at Bikini Bottom," Squidward tried to take SpongeBob's tickets for his own luxury of enjoying the concert. At the end of the episode, he tries to ruin Kelpy G and SpongeBob's performance by joining in, but was removed by security.
- In "Squiditis," he lied to Mr. Krabs of being sick in order to escape the the Krusty Krab. On the way, he also told SpongeBob the same thing, making him worried and then later, sick.
- In "Chum Fricassee," after quitting his job at the Krusty Krab, Squidward improves the Chum Bucket using his grandmother's recipe: Chum Fricassee. Later, when Mr. Krabs and SpongeBob sneaked into the Chum Bucket to end Plankton's scheme, Squidward obstructs it and gives them a spot (in the bathroom), thus putting them in bankruptcy. He also acted harsh to Plankton on cooking the fricassee when a line of customers wanted the chum. Near the end of the episode, Grandma Tentacles appeared at Squidward, trying to save her recipe from Squidward and telling him that he undercooked the recipe, thus poisoning the customers. The customers then destroy the Chum Bucket, as well as Squidward's fan base. Mr. Krabs hires Squidward back due to destroying the Chum Bucket and "promotes" him as the restaurant's doormat (which was actually a punishment for nearly putting them into bankruptcy.) This is one of Squidward's most villainous roles in the series.
- In "Little Yellow Book," though at first he was as he is in every shift in the Krusty Krab, he became suspicious of SpongeBob's diary as he added more memories in it. He then distracts SpongeBob as he tries to learn more of his diary. Nearly everyone laughed along with Squidward as he told them about SpongeBob's secrets. But as SpongeBob found out about this, he cries in depression, making everyone mad at Squidward. Squidward doesn't care about this until he got hit by a taxi driver, had his house repossessed, electrocuted by lightning when it was raining with no roof, and got arrested by two officers. Upon imprisonment, he gets booed by Patrick, shaming him for what he did to SpongeBob. As SpongeBob visits Squidward, he begs him for forgiveness as SpongeBob told him that he only read his work diary, which became a best-seller and told him that he never read his embarrassingly personal diary. Everyone was about boo at the imprisoned Squidward, but SpongeBob told the mob that he forgave Squidward. Harold tells SpongeBob that Squidward is reading his personal diary, leaving him crying in depression again. Everyone boos at Squidward and throws tomatoes at him, though he doesn't care as he finds the secrets hilarious. This is Squidward's second biggest antagonism in the series.
- In "Squid Defense," he injured a man who was trying to give his groceries back (which Squidward misinterprets as a thug that was trying to murder him.) As a result, Squidward gets arrested at the end of the episode.
- In "Don't Look Now," SpongeBob and Patrick saw a scary horror movie. Squidward pretends to be the Fisherman in order to play a cruel joke on them. As a result, SpongeBob and Patrick misinterpret the Fisherman eating Squidward, they in reality end up injuring Squidward.
- In "Yeti Krabs," Squidward arrogantly attacks the Yeti Krab when he thought it was Mr. Krabs wearing a costume and nearly puts Mr. Krabs, SpongeBob, and himself in danger.
- In "Patrick! The Game," Squidward taunted Patrick's ideas for his game. Eventually, after Patrick made his game, Squidward considers going to his place pointless, to where Sandy threatens him a few times. In every turn he gets, Squidward receives no benefit (such as having cardboard jail box on his head) to where he gets angry and tries to leave the game. As Patrick began make the rules random, Squidward gets angered at this and yells at how he is supposed to win. When Squidward decided to declare himself automatic winner,Patrick states that no player can declare themselves the winner. Squidward then destroys the game where the police then arrests Squidward for real. With Patrick also writing this as a repeat offender, Squidward thanks the officers for arresting him until he encounters the same inmate from before, with him begging someone to say his name.
- In "Sold!," after knowing that SpongeBob and Patrick think Nick Fishkins has bought their homes. Squidward lies that a 14-member family has moved into SpongeBob's Pineapple and an 8-member rock band with several instruments has moved into Patrick's rock. When SpongeBob and Patrick come to their old houses, he puts on outfits to match the characters that he made up. This exhausts him and SpongeBob and Patrick flip Squidward's house. Nick Fishkins later comes by and Squidward's house is "Not Sold." SpongeBob and Patrick then return to their homes.
- In "The Whole Tooth," Squidward antagonized SpongeBob and Patrick's belief in the tooth fairy. At night when SpongeBob tries to take Patrick's baby tooth to the tooth fairy, Squidward attempts to trick Patrick into thinking that SpongeBob betrayed him. But his plan failed when SpongeBob showed them what the tooth fairy really is. As punishment for trying to ruin their friendship, Squidward was forced to eat chum meat which made him lose all of his teeth.
- In "Mermaid Pants," After SpongeBob and Patrick ruined Squidward's garden, Squidward tries to attack them with a rake, but was halted when the Krusty Krab horn went off. Later, SpongeBob and Patrick made a super villain lair for Squidward and Mr. Krabs as part of their game of Mermaid Man and Barnacle Boy. However, Squidward took advantage of his super villain role and tries to kill SpongeBob and Patrick by dipping them into the fryer in a desperate attempt to get them out of his life forever. But luckily, SpongeBob and Patrick foiled his plan at the last moment and made Squidward fall into the fryer instead.
- In "Unreal Estate," Squidward secretly puts in black pepper inside SpongeBob's house so that SpongeBob will think he's allergic to his house, which he aims that SpongeBob will leave to another house. However, this changed when he himself found the perfect house for him, which made him stay in that house and make SpongeBob stay in his old neighborhood, away from his new house.
- In "Mimic Madness," Squidward, along with Plankton, intended on hurting SpongeBob in order to make him stop mimicking others. However, Patrick demanded them to leave him alone.
- In "SpongeBob's Place," Squidward made fun of Mr. Krabs for being jealous of SpongeBob. He showed no care for Mr. Krabs when he was stretched out and made into a bridge to cross over the lava river he made. When he saw SpongeBob making his house a restaurant, he called the health inspector to file a complaint, which led to the restaurant being shut down. When he sees the Krusty Krab completely empty, he believed that his plan of running the Krusty Krab out of business was a success, which he responds by singing and dancing about how much he hates his job, Mr. Krabs, SpongeBob and the Bikini Bottomites. However, his luck ran out when SpongeBob, the customers and an angry Mr. Krabs came back, much to his chagrin. The customers laugh at Squidward and he shrinks himself in embarrassment.
- In "Sportz?," Squidward makes up numerous sports that could hurt and kill SpongeBob and Patrick in order to get revenge after they destroyed his garden again. He then creates a stadium as he plans to watch them maim themselves with various sports in front of a live audience. Luckily, when Sandy arrives, she saw through Squidward's intentions and decides to challenge him for the sake of SpongeBob and Patrick. Sandy wins the challenge and Squidward got his punishment when he ends up getting injured himself. This is Squidward’s BIGGEST ANTAGONISTIC role in the entire series.
- In "Scavenger Pants," Squidward makes up a really difficult scavenger hunt in hopes of getting rid of SpongeBob and Patrick. After several failed attempts, he makes the game harder when he cruelly lied about having a long-lost brother. His plan initially succeeded as it took them months to find his "long-lost brother". But when SpongeBob and Patrick arrived back, Squidward gets the punishment he deserved when Mrs. Tentacles revealed to have adopted them as foster brothers, much to his chagrin.
- In "Pat the Horse," Squidward constantly made fun of Patrick being a horse and made cruel jokes about it to SpongeBob and Mr. Krabs. He even assisted Mr. Krabs in cheating during the race in hopes of winning.
- In "Chatterbox Gary," Squidward becomes annoyed with Gary's translation collar. In order to get back at SpongeBob and Gary, he breaks into the house, steals the collar and replaces it with a fake one. Then he made SpongeBob do various, but stupid things in order to get rid of him. But the very next day, Gary discovered Squidward's prank and makes him swallow the fake collar. As punishment, Gary made Squidward sound like a snail to trick several worms into attacking him.
Eugene H. Krabs
Mr. Krabs has an extremely prevalent antagonistic side and plays a villainous role due to his extreme greed mostly because he's the villain side in conning and criminality as well as committing illegal misdemeanors and felonies at occasions. He is even called a second antagonist by Stephen Hillenburg.
In the original series, he was a lot kinder and more friendly but still somewhat greedy, but in the Paul Tibbitt era, his personality became exaggerated and now, he has become significantly more greedy and abusive. But when season nine came along, even to the fact that the show's creator Stephen Hillenburg came back, his abusive and greedy nature was toned down due to negative reviews of episodes such as "One Coarse Meal" for one example.
When it comes to his business rival, Plankton, he takes pure joy in his suffering and refuses to let him have any form of happiness. He goes as far as being the aggressor without Plankton even plotting to steal the formula. He even breaks boundaries Plankton doesn't.
He breaks several worker's rights laws as if they are nonexistent to him. He'll bill his employees instead of giving them their paychecks, have them replaced when they go on strike, pay them with fake money, make them work 24 hours a day, drag them into work early, put them in bad working conditions, claim their prize money as his own, and force them into labor even outside of work.
- In "Help Wanted," he tells SpongeBob to find a spatula with port attachments so he can get rid of him. This was however only because he was convinced by Squidward, so this action was an act of manipulation.
- In "Pickles," it is revealed that the Krusty Krab has a refund policy, but Mr. Krabs had it written microscopic on the Gallery Grub so people wouldn't notice. Despite just losing 2 dollars from a refund, Mr. Krabs takes it out of SpongeBob's paycheck.
- In "Squeaky Boots," Out of his cheap nature, he gives Pearl a pair of boots for her birthday instead of fancy slippers. After selling them to SpongeBob, he stole his boots away from him, because of the squeaky noise. The squeaky noise hallucination forced him to tell the truth, eating them, and at the end of the episode, he got hiccups sounding exactly like the squeaky noise of the boots.
- In "Arrgh!," he gets addicted to a board game that SpongeBob and Patrick present to him. He follows SpongeBob home and constantly begs him to play another game when he's trying to go to bed. The next morning, he gets SpongeBob and Patrick to be pirates and help him find the Flying Dutchman's treasure. He mistreats them by mocking their pleads for rest and food and leaving them in the cold as he rests in a warm tent. The two eventually discover that Mr. Krabs was actually using their game board as a map and that he wanted the treasure for himself. When the Flying Dutchman himself confronts them for digging up his treasure, Mr. Krabs attempts to sacrifice his crew to save his own life. This is the first time in the series where Mr. Krabs is portrayed as a villain.
- In "Patty Hype," he and Squidward ridicule SpongeBob's idea of Pretty Patties, making SpongeBob start his own business only for them to laugh even more. But when SpongeBob's Pretty Patties become popular, Mr. Krabs does not believe it and decides to go there himself, only for him to arrive at a very long line. When he eventually arrives, he convinces SpongeBob to return to the Krusty Krab so he can take over and earn money. Later, the side effects of the patties change the colors of various body parts of the Bikini Bottomites and they demand him to pay them all back. They then angrily chase Mr. Krabs as he flees to the Krusty Krab. He is unable to get in because SpongeBob is distracted with the sound of the squeaky pickles. The Pretty Patties' side effects might not count as antagonism because neither SpongeBob nor Krabs were aware of the side effects.
- In "Life of Crime," he lies to SpongeBob and Patrick that they could take anything as long as they give it back. It is also shown that Mr. Krabs has stolen many objects from people, telling the boys that they are "borrowed."
- In "Pressure," he, SpongeBob, Patrick, and Squidward made fun of Sandy to show that sea creatures are better than land creatures.
- In "The Smoking Peanut," he steals Clamu's pearl (in reality an egg) and abuses Free Day in order to make a quick buck. His actions cause Clamu to make agonizing cries that are heard throughout the town, and the rest of the world.
- In "Graveyard Shift," he just as the Krusty Krab was about to close, he decides to open the Krusty Krab for 24 hours a day just to gain more money. He then abandons SpongeBob and Squidward with their new shift, claiming to have a life.
- In "Krusty Love," he falls in love with Mrs. Puff and asks SpongeBob to give her stuff that she doesn't even need, telling him not to spend any money, and when SpongeBob comes back with the item, he repeatedly tells him he was not supposed to spend his money on anything. This continues until SpongeBob curses Mr. Krabs and leaves the episode.
- In "Sailor Mouth," he uses foul language and actually said all 13 bad words. This may not count as antagonism because he tripped on a rock so he only swore out of pain.
- In "Jellyfish Hunter," he tricks SpongeBob into collecting jellyfish. SpongeBob soon discovers that Mr. Krabs is squeezing jelly out of them so more jelly Krabby Patties can be made. The jellyfish are eventually set free and sting Mr. Krabs all at once, burning his body. He has no choice, but take jelly off the menu. This might be one of his most villainous roles yet.
- In "The Fry Cook Games," he told SpongeBob that Patrick was not his friend and he was just helping Plankton. Therefore, Krabs lied to SpongeBob so he could win the award for the Krusty Krab, but neither side won in the end when SpongeBob and Patrick call off the battle and reconcile as best friends.
- In "Squid on Strike," he illegally give his workers a bill instead of a paycheck for ridiculous reasons (such as breathing, existing, and even doing their own job). He again takes illegal actions by firing his employees when they announced going on strike and then having them replaced as if they were only tools. He later taunts a flattened Squidward for actually dragging in customers and gives a fake yawn when SpongeBob stands up for Squidward. He then forces both Squidward and SpongeBob to work for free for the rest of their lives to pay off the damages to the restaurant (which SpongeBob destroyed) despite it being obvious that Squidward was innocent as he was with Krabs the entire night.
- In "Sandy, SpongeBob, and the Worm," he refuses to pay even a cent to Sandy to get rid of a worm, and claimed that he rather have the worm come and eat them all alive. After acting insane, hence the foaming in his mouth, he apologizes to them, so his outburst can be considered forgivable.
- In "My Pretty Seahorse," Mr. Krabs tried to get rid of Mystery (in which SpongeBob tries to hide her from him and Squidward). He told SpongeBob about a story about losing a friend (actually a dollar he spent on soda) which guilted SpongeBob into releasing Mystery into the wild. While he was almost proud about getting rid of Mystery, Squidward told Mr. Krabs that Mystery ate his money. With no other choice, Mr. Krabs and SpongeBob tried to get Mystery back. It should be noted that Mr. Krabs wished for Mystery to be given up as he noticed she was not enjoying her unnatural surroundings and did console SpongeBob when he tearfully gave up Mystery stating he had done the right thing for her.
- In "Nasty Patty," he and SpongeBob creates a tainted patty to a health inspector, believing he is fake. However, when they realized he was real, and they presumed the patty killed him, they try to bury him and lock him in the freezer. Also, he tells SpongeBob he'll fire him if he does not join him. He even tries to frame SpongeBob for the "death" of the health inspector when the police think that they're hiding something.
- In "One Krabs Trash," he tries to take back a soda-drinking hat he sold to SpongeBob after hearing about its price. He scares SpongeBob out of it with a paper ghost, defiles a grave, and fights an army of skeletons to get it back, only to find out that it was worthless. Apparently, when Mr. Krabs said "What a baby." when reading Squidward's dreams' grave, karma comes back to him when he cries and Squidward says exactly the same thing at the end of the episode. Also, earlier in the episode, he scams his customers, such as saying that the umbrella belongs to the queen of Switzerland.
- In "Can You Spare a Dime?," he accuses Squidward of stealing his dime even though there's no likely or obvious proof that he stole it. It's clear that he thinks Squidward is lying because he pulls out a lie detector and he tells Squidward to show him his tentacles. He still refuses to forgive Squidward after more than several months or even years later, making SpongeBob snap and grab him by the throat, screaming at how ridiculous and stupid the entire situation is, when the giant dime falls out of Krabs' pants, proving Squidward never stole the dime after all, thus Squidward is rehired. And at the end of the episode, just when all seems well, Mr. Krabs accuses Squidward of putting the dime in his pants, showing the high possibility of Squidward quitting again and repeating the cycle. On a side note, Krabs also selfishly refuses to donate to the children's fund and questions what children ever done for him.
- In "Wet Painters," he tricks SpongeBob and Patrick to paint the wall of his house, telling them the paint is permanent, and threatens them to not leave a single drop of paint on anything but the wall, or he will cut off their butts and put them on his fireplace. It turns out that his threat was just a prank. As karma strikes, while he was laughing, his saliva washed the paint off his wall and into the floor.
- In "Clams," he forces everyone out of the Krusty Krab after he earns his millionth dollar. After a giant clam steals it while he and his employees went clam fishing, Mr. Krabs forces SpongeBob and Squidward to stay for days and refuses to let them go home until they get the dollar back (even to the point of starvation). He even refuses to take a dollar Squidward had in his wallet in place of the one stolen by the clam. When they attempt to abandon him, he holds them hostage and uses them as live bait just to get back his millionth dollar from the clam. Krabs succeeded, though his near-death experience worried SpongeBob and Squidward (who complained because he was tied to SpongeBob). This is one of Mr. Krabs' biggest antagonisms in the series.
- In "Born Again Krabs," he tries to sell a rotten Krabby Patty to customers, not allowing SpongeBob to make a fresh patty until it's sold. When there hasn't been a customer for weeks, he obliviously blames the placemats (or intentionally refuses to give in to the real reason). He gets sick after eating it and is persuaded to be generous by the Flying Dutchman. However, after realizing it wasn't a dream, he steals back soda from a customer, toys from children while calling them freeloaders, stopped another customer from watching free TV and erases his memory, nearly rips someone's arm off for a penny, and trades SpongeBob's soul for 62 cents after he stood up for him. He even questioned if he could've gotten more. But after Squidward scolds him for choosing money over SpongeBob, Mr. Krabs shows remorse and wants SpongeBob back.
- In "Krabby Land," he creates a bogus and unsafe theme park after leaving SpongeBob at a playground. He informs SpongeBob to stall the kids while he counts the children's money. He scolds SpongeBob for thinking about himself and demands him to go back and stall despite the obvious injuries SpongeBob has suffered. He masquerades as a clown after promising Krabby the Clown. SpongeBob gets disappointed by this as Mr. Krabs says that the children are gullible and that he only cares about their parent's money. As he attempted to sneak to the bank, the children beat Mr. Krabs up and take their money back after finding out. As punishment, Mr. Krabs is tied on fours between wooden poles, and is force-fed with a can of lima beans and a truckload of them by thugs paid by children for his swindling. This is Mr. Krabs' worst antagonistic scheme to get rich in the entire series.
- In "Fear of a Krabby Patty," he at first plans to change working hours to between 6:00 a.m. to 11:00 p.m., but then opens the Krusty Krab for 24 hours to outdo his rival's 23 hours. He makes Squidward and SpongeBob work 24 hours every day (which is actually a violation of several workers' rights laws) without getting a break or even being allowed to go home. After 43 days, they are near the breaking point; Squidward had severe insomnia, SpongeBob was hallucinating, and even Krabs was in bad shape. At the end of the episode, he decides 23 hours is plenty.
- In "Krusty Towers," he plagiarizes the law of the hotel he visited into the Krusty Towers, making Squidward miserable by having him do ridiculous tasks and making him use stairs instead of an elevator. Squidward quit when he was tasked on giving Patrick a bubble bath and returned as a customer ragging Mr. Krabs the same way he did with him. At the end of the episode, he decides to build a hospital, making Squidward miserable again as he informs the boys that they're going to medical school.
- In "Whale of a Birthday," it was revealed that because of Mr. Krabs' cheap nature, he makes Pearl's birthday parties horrible. Pearl once revealed that Mr. Krabs once gave her a box of staples as a birthday present. Choosing his cheap nature over his daughter's wishes, Pearl's 16th birthday was at first, horrible, but she manages to get a lot of presents, bought by SpongeBob through Mr. Krabs' credit card, which was most likely maxed out. He also originally planned to give Pearl nothing and have the entertainment be bubble wrap.
- In "Wishing You Well," he tried to take thrown coins meant for a wishing well. During his wishing well scheme, he put SpongeBob in there so he can get the coins, saying he'll see him in 8 hours. Later that night, after getting some coins in his well, he broke his word as he wouldn't let SpongeBob and Patrick leave just so he can get more coins from any late-night wishers. Near the end of the episode, he told SpongeBob that there is no such thing as magic (even though SpongeBob and Patrick struck magic down the well) and regardless of Sandy, Mrs. Puff, and Plankton's wishes coming true, he still didn't believe him. To prove him wrong, Krabs wished he was served, but in the end, ends up actually served. Before being eaten, Mr. Krabs cried that he believes in magic in hopes of it getting reversed.
- In "New Leaf," he destroys Plankton's gift shop after disbelieving that Plankton had given up on getting the secret formula, upsetting Plankton. Mr. Krabs has also taunted Plankton in getting the "secret formula," which strongly annoyed Plankton after realizing the paper had contained nothing but a prank message. Even though his suspicions were proven right at the end, the way he executed his disbelief could be considered cruel.
- In "That's No Lady," he forced SpongeBob to work 3 hours early, not that SpongeBob really minds anyways. He also stalked Patrick (as Patricia) by date offerings until he discovered that Patricia is Patrick in disguise. This may not count as antagonism because Mr. Krabs did so because he has a crush on "Patricia".
- In "Born to Be Wild," he invites the Mild Ones to the Krusty Krab much to SpongeBob's chagrin. This counts as an antagonism because SpongeBob still mistook the Mild Ones as the Wild Ones.
- In "Best Frenemies," he teams up with Plankton to steal a kelp shake. But the algae growing on Plankton and Mr. Krabs was a backfire due to the unnamed radioactive ingredient that was mixed with the kelp juice.
- In "Squid Wood," he made Squidward wash the dishes and made Mini-Squidward do the register just because Mini-Squidward is making him money.
- In "The Original Fry Cook," during a flashback, when Jim attempts to ask for a raise, Mr. Krabs constantly tries to change the subject, even revealing his sideburns to be fake. When Jim is finally able to demand a raise, Mr. Krabs mockingly laughs as if he just heard a hilarious joke. Even though this caused Jim to leave, Mr. Krabs still finds it funny even to the present.
- In "Krabs à la Mode," he refuses to have the thermostat changed from 62° to save money. He even enforces this rule when it is obvious there are icicles on the ceiling and the floor is ice. This shows that he is too stupid and oblivious to the fact that the temperature was not 62°. At the end of the episode, he had Plankton frozen in an ice cube in his drink. He mockingly thanked him for turning his restaurant into an ice rink and then a swimming pool and asked if he had anymore bright ideas before drinking him alive. Even if it was meant to punish Plankton, consuming someone can be considered taking it too far.
- In "The Krusty Sponge," he had SpongeBob ride customers around in a train while Squidward had to make Krabby Patties in a SpongeBob suit, being unable to use his arms. He then makes Squidward cook Spongy Patties (rotten patties that turned yellow), which made the customers ill and brought Mr. Krabs to court; he was acquitted only because the judge was a SpongeBob fan. The epilogue showed Squidward being whipped by the judge while giving him a ride on the train. Mr. Krabs considered it a happy ending.
- In "The Krusty Plate," he left SpongeBob alone with the Krusty Krab burnt in a flashback. At the end of the episode he chased SpongeBob for destroying the Krusty Krab.
- In "Atlantis SquarePantis," Mr. Krabs placed an illegal stand in front of the museum (even though it was free on Mondays) and then was busted by Miss Shell.
- In "Pat No Pay," he made Patrick do some work and threatened him that if he can't to do something right, he will never give him a Krabby Patty to eat again.
- In "The Two Faces of Squidward," as SpongeBob and Squidward were running from the fans, blocking the doors, Krabs tells them that all of Squidward's fans at the Krusty Krab means a lot of money, and decides to let them in if they pay him in exchange of touching Squidward's handsome self, despite Squidward's chagrin. He even pulls a scam of charging an extra $3 for a "free" soft drink. When Squidward gets turned back to normal, the customers leave, prompting Krabs to slam the door on Squidward's face, making him look more horrid than his usual face, in hopes of making them come back.
- In "Stanley S. SquarePants," he blames SpongeBob for the damaged things Stanley broke. SpongeBob may have taken the blame for Stanley at first, but then he started to accuse SpongeBob without question. At the end of the episode, he hands Stanley over to Plankton so he can destroy the Chum Bucket.
- In "Penny Foolish," he sees SpongeBob picking up a "penny" (which was actually $500 bill) and tries various plans to take it from him, even to the point of insanely breaking into SpongeBob's house with a metal detector. When SpongeBob explained the misunderstanding, when at first it seemed like he believed SpongeBob, he is then shown digging around SpongeBob's house looking for the "penny."
- In "Patty Caper," he stole the secret ingredient of the secret formula, so he wouldn't have to pay for delivery ($1.99) and he tried to frame SpongeBob for it without letting him say a word (while holding the ingredient of the secret formula). As punishment by court, he was forced to sell free Krabby Patties all day and watching it all go down.
- In "Plankton's Regular," he doesn't want Plankton to have one single customer, despite Plankton telling him he would no longer try to take his secret formula. At the end, when the fish is revealed to have been paid by Karen to visit the Chum Bucket, Krabs sadistically laughs at Plankton's misery.
- In "The Krabby Kronicle," he creates a newspaper and makes SpongeBob write lies about people, ruining their lives. SpongeBob tries to stop him, but Mr. Krabs threatens to take away his spatula. Soon Mr. Krabs' scheme is found out, and an enraged crowd steals back his money. In a picture advertising his scheme, Mr. Krabs was holding a whip, while scolding SpongeBob. At the end of the episode, he counterfeits the money, which is obviously illegal. This is Mr. Krabs' third biggest antagonism in the series.
- In "The Slumber Party," he refuses to trust Pearl and attempts to make too many rules for her slumber party, which resulted in him getting kicked out. He then destroys SpongeBob's television and his house to show how destructive teenagers can be. Then, he makes SpongeBob spy on Pearl and her friends. He also threatens to fire SpongeBob if he doesn’t spy on them. When SpongeBob absorbs Mr. Krabs’ root beer and wrecks the house, Pearl's party is ruined and Mr. Krabs is forced to spend his money for a new party.
- In "Krusty Krushers," he puts SpongeBob and Patrick in danger of being killed by huge wrestlers so he can earn the $1,000,000 prize for himself. When it seems like SpongeBob and Patrick were about to be killed, he mourns about not receiving the cash prize, and shows no feelings for SpongeBob and Patrick. However at the end of the fight, SpongeBob and Patrick choose wrestle camp instead, much to Mr. Krabs' dismay.
- In "No Hat for Pat," he made a fortune when Patrick kept falling on his face, disappointing SpongeBob. Eventually, people take their money back after a Patrick stunt failed. Krabs, then harshly fires Patrick, telling him that he will never wear the hat as long as he is still standing. This is probably Mr. Krabs' most abusive role.
- In "Truth or Square," he had hidden cameras on his friends (which obviously, he would spy on them).
- In "Chum Caverns," he invades Plankton's caverns to steal his customers while also claiming the caverns as his property since it is under his restaurant. When they are all trapped underground, he still has the customers pay to eat.
- In "Tentacle-Vision," he barged into Squidward's house during his show just to promote The Krusty Krab.
- In "Greasy Buffoons," he and Plankton sell customers greasy food. This eventually turns people (including Patrick) into overweight, mindless zombies. SpongeBob calls a health inspector, resulting in both the Krusty Krab and the Chum Bucket being shut down until the grease gets cleaned up. It is unknown if he learned his lesson however.
- In "A Pal for Gary," he sees SpongeBob bringing his pet snail to work as a way to use Gary for free labor as he hands him a spatula.
- In "One Coarse Meal*," he dresses up as Pearl and cruelly terrorizes Plankton (presumably for 17 days straight), who goes into a suicidal depression and laughs at it. At the end of the episode, SpongeBob betrays Plankton by projecting a family of whales (the mime only creeps him out). While Mr. Krabs probably didn't intend for Plankton to attempt suicide, erasing a picture of Plankton could say that he intend to permanently get rid of him. Either way, scaring someone is way too much, and Mr. Krabs thought SpongeBob informed him of Plankton being broke on the street, not about to die to a bus, because of his vague hint, "Sorry to interrupt your gloating sir, I just thought it would be pertinent for you to know that Plankton is laying on the street, forlorn." Mr. Krabs however showed no remorse as he called Plankton a mess and laughed. On a side note, it is revealed that he doesn't pay SpongeBob actual money, basically making him do free labor for worthless "Wacky Bucks." The episode itself reveals how much he despises his rival and takes joy in his misery. Because of his actions, this episode has gotten an extremely negative reception from fans. Even the writers didn't like it. Because of all the negative reception, this has confirmed to be Mr. Krabs' MOST ANTAGONISTIC ROLE and considered the MOST ANTAGONISTIC ROLE OVERALL in the series.
- In "The Play's the Thing," he opens a dinner theater at the Krusty Krab and forces SpongeBob and Squidward to both put on the play and serve food at the same time (which doesn't happen in a real dinner theater). The customers expect them to be able to do this and throw hard burned Krabby Patties at them when they are unable to. Mr. Krabs shows no sympathy and decides to do it again another time.
- In "The Cent of Money," he uses Gary as a coin magnet. He steals everyone's money, brings Gary to exhaustion, and distracts SpongeBob by giving him tedious chores. Mr. Krabs is soon crushed by a tidal wave of money and put in the hospital, where every cent he collected is used up to pay his bill. This is Mr. Krabs' third most villainous role.
- In "The Curse of the Hex," he refused to let Madame Hagfish have a Krabby Patty and takes away the Krabby Patties SpongeBob made and possibly even paid for her.
- In "Sponge-Cano!," he nearly tried to take SpongeBob and Squidward's life essences (kill them).
- In "The Masterpiece," he attempts to plagiarize the Sea Chicken Shack to get his customers back. He has Squidward make a statue, but disapproves of the finished masterpiece and calls it a weapon, a doohickey, and a piece of junk. He is later painted gold and has the kids play on him. Squidward stills seems to be mad at him about his disapproval of his art.
- In "The Wreck of the Mauna Loa," he gives away SpongeBob and Patrick's secret hideout by turning it into an amusement park ride. He nearly gets everyone killed, and gets arrested.
- In "Drive Thru," he smashes a hole in the wall for a drive-thru window instead of having someone install one properly. Even though SpongeBob bought a microphone and a menu board, Mr. Krabs uses old napkins as a menu board and tin cans as a microphone instead of using the items SpongeBob bought. He also forces SpongeBob and Squidward to work extra hard instead of hiring more employees to work for both Drive Thrus. As punishment for his actions, the Krusty Krab is destroyed at the end and he cries because of it.
- In "The Googly Artiste," he notices Patrick making profit out of Krabby Patties and drags both him and SpongeBob into his office and angrily scolds them. When Squidward comes in to rub it in Patrick's face, he reveals that he was only doing what Squidward advised him to do. This made Mr. Krabs now believe it was Squidward's idea, even though he said nothing about using Krabby Patties. He punishes Squidward by forcing him to be Patrick's apprentice and makes him and Patrick make "art" for free while only Mr. Krabs gets the money.
- In "Plankton's Good Eye," after eating a bunch of pickles, Mr. Krabs spots Plankton trying to open the safe. He purposefully mistakes him for a pickle and devours him. Plankton then had to wait for nature to make its call.
- In "Barnacle Face," Mr. Krabs caused Pearl to have barnacles in the first place when it is revealed that the house's soap was made of the Krabby Patty's grease. As karma, he lost his diamonds when SpongeBob used them to cover Pearl's barnacles and chased them.
- In "The Krabby Patty That Ate Bikini Bottom," Mr. Krabs used all the serum on a Krabby Patty, disregarding SpongeBob's advice on the way. He then forbids SpongeBob and Squidward from evacuating the Krusty Krab and suggests they stay and work. Mr. Krabs eventually eaten by the Patty when trying to save his cash register until SpongeBob absorbed it.
- In "InSPONGEiac," he snaps at SpongeBob and being picky at his work, like too much mustard (101%) and saying the way that he flips Krabby Patties is wrong and kicks him out to get some sleep for he believes he's wasting his profits, claiming that he'd be broke in 411 years.
- In "Chum Fricassee," Squidward gets a new job at the Chum Bucket (as it has been shown how poor of an employer Krabs is) and then becomes famous for his grandmother's recipe. This nearly causes the KK to go out of business (which would have happened anyway had somebody reported his abusive nature). The chum bucket is later destroyed by over-reactive Bikini Bottomites after Squidward made one small mistake. Krabs then punishes him by using him as a doormat (literally). Yet another time he abuses his workers.
- In "Hello Bikini Bottom!," Mr. Krabs did several crimes, like steal Colonel Carper's first band (SpongeBob and Squidward) and sound equipment, Mrs. Puff's bus, and others. After the meteor shower that Patrick told him about, Mr. Krabs made money success, until there was a line stating that he had to pay everyone he did crimes at, ending with Colonel Carper getting the remainder of his money by having his roadies pulverize Mr. Krabs down. Luckily for Mr. Krabs, SpongeBob was generous enough to let him take Gary's college fund to get the Krusty Krab back. He didn't thank SpongeBob however as he immediately accepted the offer.
- In "Squid Baby," he wouldn't show care for Squidward when he got the head-go-boom-boom-itis.
- In "Safe Deposit Krabs," he tried to take money from the Bikini Bottom Bank but was kicked out twice. After being locked in its safe, this worried SpongeBob.
- In "SpongeBob You're Fired," he fires SpongeBob to save a nickel.
- In The SpongeBob Movie: Sponge Out of Water, he happily takes Plankton's last penny and puts it in the safe. Seeing how Plankton has been crying in the same spot for hours, he decided to go out and laugh right at him. He was about to launch him back to the Chum Bucket once he got bored, only to realize it was just a decoy. He heads to his office to find the formula missing. He believes his rival stole it, even when SpongeBob explained what really happened. He then tricked SpongeBob into torturing Plankton with his laugh to make him give back the formula. After realizing that there were no patties when the customers wanted a refund, he took Plankton outside and convinced everyone that Plankton stole the formula. When SpongeBob rescues Plankton from the mob, Mr. Krabs declares that SpongeBob has been working for Plankton the entire time. Later, he refuses to execute Sandy's plan to bring Krabby Patties back since he won't get any money. When SpongeBob and Plankton arrive, but accidentally with the fake formula, Mr. Krabs convinces the crowd to sacrifice the two. It is only when he starts smelling Krabby Patties that he saves SpongeBob from being sacrificed. The movie as a whole shows that Mr. Krabs hates Plankton more than he trusts SpongeBob, increasing the bitterness in their rival.
- In "Tutor Sauce," his driving methods to SpongeBob were illegal. He mentions that he taught Pearl how to drive without her needing a license. After using Gary to stir the wheel to help SpongeBob, the police checks on them. Mr. Krabs tells the officer that he isn't a registered driving instructor to where instead of getting a ticket (or even having SpongeBob paying for it), he gets to be a student at Mrs. Puff's Boating School to his shock.
- In "What's Eating Patrick?," he teaches Patrick how to eat in order to win the eating contest, even in means of depriving him from tasting the patties. During the contest, Patrick tries to leave because he was tired of not tasting, only for Krabs to tell him if he does, he bills him, stating that all the training patties become eating patties.
- In "The Sewers of Bikini Bottom," he, along with Crupski, showed no concern about the customers' safety at the stadium and cared less about the consequences when the plumbing system begins to go haywire.
- In "Larry's Gym," after overhearing Larry about that the opening of the gym is free only for today, Mr. Krabs takes advantage of the opportunity and stays there thoroughly. He even taunts Larry several times (especially when he becomes unfit). At the end, he gets cooked for staying in the sauna too long, as karma for abusing the opportunity.
- In "Lame and Fortune," after Squidward won money as an award for being the most miserable cashier thanks to a fortune cookie, Krabs takes the money from Squidward abrasively stating "Me cash register, me money" (which is also considered stealing), making Squidward miserable again.
- In "Mutiny on the Krusty," Mr. Krabs acted like a tyrant and abused his power throughout the episode. He cared less about the rip current that's endangering everyone and the only thing he cared about was having his customers spend their money in his restaurant, mostly out of petty crankiness due to the fact that this was the day that he must pay his employees for their service. He even berated and belittled the customers and his workers after being called tyrant and claimed himself as the captain of the restaurant, much to everyone's disdain. He even acted like a spoiled child when he selfishly refused to save the customers from the monster. However, SpongeBob managed to get him to his senses when he almost spent his first dime on candy. At the end of the episode, he forced Squidward and the customers to push the Krusty Krab back to Bikini Bottom, despite performing a heroic act of saving them from a sea monster. This is one of Mr. Krabs' biggest antagonisms in the series.
- In "Krusty Katering," he lies to a high-class lady about being a high-class caterer just so he can steal her check. When SpongeBob tells him he cannot take the check, as they are not high-class caterers, he claims that they are anything the have to be for him to make the money and also threatens to send SpongeBob, Patrick and Squidward back to the chaotic kid’s birthday party if the don’t do what he says. However, at the end, the birthday kid gets the check wet, which upsets Mr. Krabs.
- In "SpongeBob's Place," he becomes jealous of SpongeBob for getting all the customers' attention. He tries to get rid of him by lying about the restaurant being haunted with ghosts. He tries to cook the same way SpongeBob does, but this fails. He goes over the edge when he traps the customers by putting a river of lava around the restaurant. But this also fails when the customers stretched him into a bridge for them to cross, which resulted in him getting burned, which is considered karma.
- In "Out of the Picture," he attempts to get Squidward far away from Bikini Bottom by having him deliver food to places far away from the Krusty Krab so he can buy his art. However, with SpongeBob’s help, Squidward manages to get back before Mr. Krabs can buy his art. After failing to get Squidward away, he goes crazy enough to the point of trying to murder Squidward, but he is tricked and manipulated by an art appraiser. His actions are incredibly unforgivable. This is also Mr. Krabs’ second biggest antagonism in the series.
- In "Spin the Bottle," Mr. Krabs selfishly demands the bottle to use it for corruptive matters.
- In "There's a Sponge in My Soup," he grabs some rotten food from the trash cans in order to make the Krabby Soup.
- In "Sanitation Insanity," he cared less about the punishment he got from the trash inspectors and forces SpongeBob and Squidward to clean up the mess for him. When he sees them in a trash fight with Patrick, he blatantly lies that they are ruining his hard work, even though he did not clean up any trash. Soon, he gets involved with the trash fight. Luckily, the trash inspectors puts their fight to a stop and Mr. Krabs sadly accepts the punishment by helping SpongeBob, Patrick, and Squidward clean up the trash, even though Patrick is not seen with them.
- In "Pat the Horse," he forced Patrick to carry a lot of kids on his back to make money. He even did the same thing with Squidward and bragged SpongeBob that his horse is better than Patrick. He and SpongeBob challenged to a race to see who gets to deliver the food to a customer at Black Devil Bay first. During the race, he cheated in hopes of winning even though Sandy told them not to, which means that Mr. Krabs doesn't want to play fair. He even impersonated an officer during the race which almost lead him to getting arrested by the police. He eventually wins the race, but gets the punishment he deserves when Patrick steals his arms and starts acting like a real crab.
- In "Bottle Burglars," he stuffs both SpongeBob and Squidward in the safe of the Krabby Patty formula as his "new security system." This is yet another time he abuses his workers.
While generally friendly, benevolent and positive, Sandy is prone to mood swings and can be vicious when angered. She is especially a threat when someone insults her hometown.
- In "Texas," she tried to lasso SpongeBob and Patrick when they insulted Texas.
- In "Prehibernation Week," SpongeBob couldn't take the extreme activities that he was doing with Sandy. He got scared and hid under Patrick's rock. Sandy overreacts as she assumes something terrible must have happened to SpongeBob and she forces everybody in Bikini Bottom to form an unnecessary search party for him and refuses to let them go home unless they find him. After they distract Sandy and escape, she nearly destroys the town looking for SpongeBob. This is the first time in the series that Sandy is portrayed as a villain.
- In "Survival of the Idiots," while half asleep, she beat up SpongeBob and Patrick and put them into graves after mistaking them for Dirty Dan and Pinhead Larry, who were two people in her dream of Texas Outlaws. Sandy is also extremely mad at SpongeBob and Patrick when they removed her fur and she used them as coverings to stay warm. This is Sandy's second most villainous role.
- In "Squirrel Jokes," she pretends to be dumb and nearly dehydrates SpongeBob, then gives him far too much water (to the point where he inflates so much that he literally fills up entire tree dome). While she only does this to teach him a lesson, this is considered too much since she could've killed SpongeBob.
- In "Pressure," upon being made fun of by SpongeBob, Patrick, Squidward, and Mr. Krabs, Sandy made them go up dry land for 1 minute, and they are attacked by seagulls.
- In "The Great Snail Race," she kicked SpongeBob's butt at the end of the episode for making a sexist comment.
- In "Patrick SmartPants," she scolds Patrick for his smart skills.
- In "To Save A Squirrel," SpongeBob and Patrick had to go through torture that Sandy created to survive after Sandy said that she had to go to a survival training camp, when she was really testing their survival skills. SpongeBob and Patrick were lost in the woods with food, water, and a tent. Patrick burned the 2-week supply of food to make their fire and their tent burned down. SpongeBob had to use all the water from the canteen to put out the fire. Then they eventually got so desperate that they almost ate each other. The cave fish turned out to actually be Sandy, who gave them their survivalist medals and revealed that she was just testing their survival skills. This is Sandy's biggest antagonism in the series.
- In "To SquarePants or Not to SquarePants," she teased SpongeBob by calling him SpongeBob UnderPants, which causes him to scream at the end of the episode. Though she could be joking.
- In "Tentacle-Vision," she disrupts Squidward's show with her dancing.
- In "Rodeo Daze," Sandy attacked SpongeBob and Patrick because she thought they were planning to get her. After she finds out that they were just delivering a letter to her, she didn't bother to apologize for attacking them by mistake. During the conversation afterward, Sandy acts rude to SpongeBob.
- In "Whelk Attack," she wouldn't let SpongeBob and Patrick inside her Treedome for protection from the whelks because she thought they were whelks in disguise. She eventually did after they proved they were the genuine article.
- In "Kenny the Cat," she proves to the crowd that Kenny couldn't hold his breath for that long, and apparently she was proven right, for it ruined the moment of Kenny making people happy, and the Bikini Bottomites turned against him. He was later sent back to the surface world. This is Sandy's third most villainous role.
- In "SpongeBob You're Fired," she experiments on people by making them eat toxic food which causes one person to be allergic to the food, and causes Patrick to mutate.
- In “Sandy's Nutmare,” she gets wrapped up in her Nutty Butter, and ignores warnings from SpongeBob about her tree. She even attempts to use her fertilizer again even after seeing the tree looking bad. When the Shalmon tells her that the business is hurting her tree, Sandy realizes her mistake and quits the business.
Gary the SnailThough Gary is intelligent and loves his owner, SpongeBob, he can be naughty at times, sometimes in his rivalry with Squidward.
- In "Gary Takes a Bath," he refuses to take a bath and takes SpongeBob's ladder away.
- In "Once Bitten," he becomes aggressive and bites pretty much everybody in Bikini Bottom, even SpongeBob, and was accused of having "Mad Snail Disease" (although it was revealed he had a splinter stuck in his body). Even after the splinter was removed, he bit Mr. Krabs.
- In "The Thing," it is revealed that he hates Squidward, and one time he viciously attacks him.
- In "Grooming Gary," he riots because SpongeBob, and other pet owners, had made him "fancy," which he did not want to be.
- In "Treats!," he constantly bothers SpongeBob by asking him to get more Snail Bites, even going so far as to make him go to every pet store in the world to see if they had them.
- In "Gary's New Toy," he became so distracted in his ball, Gary disregarded SpongeBob whenever he needed him, though this is because the ball hypnotizes him. As SpongeBob tries to place the ball away from Gary, he manages to get it back. When it came to the decision that SpongeBob tells Gary either him or the ball, Gary went for the ball, leaving his owner to cry.
Although Pearl usually doesn't cause issues, some of her decisions lead to large and severe problems. She has shown similar traits to Patrick's antagonism: selfishness, lack of consideration of others, and lack of remorse. Sometimes she can be more selfish than Mr. Krabs.
- In "Scaredy Pants," Pearl cries about Mr. Krabs embarrassing her instead of helping him when he chokes on an apple.
- In "Selling Out," Pearl yells at Mr. Krabs for wanting to spend time with her.
- In "The Slumber Party," Pearl locks Mr. Krabs out of his house to prevent him from ruining her slumber party. She and her friends later attack Girly TeenGirl who she thought was SpongeBob, causing Girly to run away crying. They also torture SpongeBob when he tries to get in the party, with Pearl going as far as to deem SpongeBob as bad as Mr. Krabs. When SpongeBob ruins the party, Pearl forces Mr. Krabs to spend his money on a new party and never invites SpongeBob or Mr. Krabs. This is believed to be Pearl's largest act of antagonism in the series.
- In "Tentacle-Vision," she takes Mr. Krabs' wallet for money, and disrupts Squidward's show with her destructive cheerleading.
- In "Growth Spout," Pearl threatens to eat Mr. Krabs' money when he does not want to feed her.
- In "Welcome to the Bikini Bottom Triangle," she demanded to go to the mall, even though she and the others were trapped in a deserted island with no way to get home.
- In "Tunnel of Glove," Pearl attempts to leave the ride, but ends up trapping her and SpongeBob from doing so.
- In "Drive Thru," Pearl and her friends yell into Squidward's ear using a megaphone, causing him a major ear injury.
- In "Mr. Krabs Takes a Vacation," Pearl mistreats SpongeBob when they're about to leave. At the end of the episode, she takes the two dollars that were rewarded to both SpongeBob and Mr. Krabs to pay for a pair of shoes, which causes Mr. Krabs to cry.
- In "Safe Deposit Krabs," Pearl yells at SpongeBob for no reason, when SpongeBob was trying to inform her that her dad was missing.
Mrs. PuffMrs. Puff is usually kind, but she can reach her breaking point when SpongeBob annoys her too much. She has used extreme methods to get rid of SpongeBob. Her antagonisms is similar to Squidward's, as they both hate SpongeBob.
- In "Hall Monitor," when she realizes that SpongeBob is the new hall monitor, repeatedly tries to choose another hall monitor.
- In "No Free Rides," Mrs. Puff lets SpongeBob pass by giving him extra credit and steals his new boat later in the episode.
- In "The Bully," Mrs. Puff threatens to kick SpongeBob's butt after seeing Flats unconscious near SpongeBob.
- In "Doing Time," Mrs. Puff gets arrested for SpongeBob's reckless driving.
- In "Oral Report," Mrs. Puff tries to arrest SpongeBob but gets arrested herself.
- In "Demolition Doofus," Mrs. Puff tries to murder SpongeBob after he causes her another accident and fools him into signing up for a car crashing event. She also gets very frustrated when SpongeBob doesn't get hit by any of the other drivers and tries to kill SpongeBob herself. This is Mrs. Puff's biggest antagonism in the series and also the darkest plot in the entire series, getting the episode rated PG when it premiered in Canada.
- In "Burst Your Bubble," she screams at SpongeBob and says: "Get out! You're never getting a driver's license. Never! Never!!!"
- In "Teacher's Pests," she takes the apple tree that Plankton grew and knocks him and Mr. Krabs out with it.
Although Barnacle Boy is a superhero, he has be shown to be a nasty person at times.
- In "Mermaid Man and Barnacle Boy II," he denied SpongeBob of using the Conch Signal and calling him a hero and tells Mermaid Man that they should ditch him (since he caused trouble to them during the middle of the episode), but changes his mind after SpongeBob saves him from the Dirty Bubble.
- In "Mermaid Man and Barnacle Boy V" after being fed up of being treated like a child, Barnacle Boy joins the dark side and renames himself "Barnacle Man."
Even though Patchy is a SpongeBob fan, some of his schemes are known to be vulgar, diabolical and unlucky. He can also be very mean to Potty when he is annoyed with him.
- In "Christmas Who?," he cuts Potty's strings and pulls Potty down, which also makes Potty's puppeteer fall.
- In "Party Pooper Pants," he accidentally stabs the mermaid's paddling pool and orders the Bird Brains to walk the plank.
- In "The Sponge Who Could Fly," he loses faith on SpongeBob SquarePants due to a simple video on "cheap walk cycles," as he describes. He soon goes ballistic and attempts to destroy all of his SpongeBob merchandise.
- In "Atlantis SquarePantis," he tries to eat Potty because of his lack of hunger due to being stranded in a desert.
- In "Truth or Square," he went through a note book which has actors and actresses' numbers. Then, it was revealed that he forced P!nk to go on his show. This can be Patchy's second biggest antagonism in the series.
- In "It's a SpongeBob Christmas!," he tied-trap a mailman to use his mail truck so he can get to the North Pole, and during the journey he runs into mishaps. He hallucintes and tries to eat Potty when stranded. In the end of the episode, as karma, he hallucinates a polar bear cave for Santa's workshop and enters, and then gets chased by a polar bear. Santa replies that stealing a mail truck definitely counts as naughty. This is Patchy's biggest antagonism in the series.
Even though Potty is a friend of Patchy, he can be obnoxious and is normally annoying to Patchy.
- In "Christmas Who?," at the end of the episode, he repeatedly tries to kiss Patchy under the mistletoe, despite Patchy’s protests. He also eats all of Patchy's cookie dough.
- In "Shanghaied," he lures Patchy into a cannon and blasts him to a nearby house.
- In "Ugh," he ruins Patchy's caveman show by wearing a futuristic robot costume and bringing in a robot that eventually goes on a rampage. At the end of the episode, he gives Patchy a t-rex as a "gift". He also causes destruction with his lasers. This can be Potty's biggest antagonism in the series.
King Neptune is often harsh and unfair towards his citizens, due to his bad temper and severe punishments given to his prisoners. Also, he gets very apoplectic when somebody messes with his crown.
- In "Neptune's Spatula," he didn't believe SpongeBob pulled the spatula until Patrick told him. Neptune then fried Patrick until the he was dead (although he semi-restored him.) During the challenge, Neptune made more patties than SpongeBob and called him a loser when the king won (up until nobody, not even himself, could eat the patties.) After declaring SpongeBob the true winner, Neptune told SpongeBob that he can't bring his friends. However, when he decided to learn how to make Krabby Patties from SpongeBob, Neptune fried the stove when he burned his finger.
- In "The SpongeBob SquarePants Movie," he falsely accused Mr. Krabs of stealing his crown (even though this was obviously Plankton's doing) and froze him until the day of execution without a fair trial or evidence (declaring the false note and message as evidence enough) and almost imprisoned his servant for touching his crown which was his job. It is made apparent that he executes people on a daily basis because Mindy angrily tells him that he can't get through one day without executing someone.
Larry the Lobster
Larry is very passionate about having a healthy diet and exercise, but sometimes his passion for a healthy lifestyle can sometimes cause him to be inconsiderate of what is around him.
- In "Pet or Pests", he tried to eat worms which are dogs in SpongeBob.
- In "Larry the Floor Manager", he got rid of the Krabby Patty and didn't care about it until the end.
The Bikini Bottomites are the citizens who appear randomly in Bikini Bottom as recurring characters. Many do not consider them antagonists, but they have been shown to have antagonistic sides throughout the series. Often they will go to extreme lengths to teach someone a lesson. They are also shown to be hypocritical on occasion. The law is no different, as unlawful punishments, kangaroo courts, and unfair and unnecessary arrests take place. Harold is considered the most antagonistic citizen.
- In "Help Wanted," the anchovies go berserk and nearly destroy the Krusty Krab until SpongeBob feeds them.
- In "Ripped Pants," they treat SpongeBob like an outcast just for pulling a ripped pants joke one too many times.
- In "Pizza Delivery," the customer angrily rejects his pizza as SpongeBob forgot his drink (which he didn't even order). He also insults SpongeBob by saying that he does not care for the customer, even though SpongeBob cares for the customers. This causes SpongeBob to break down crying. Squidward is disgusted, and gets payback by literally slamming the pizza in the customer's face. He also doesn't care that SpongeBob and Squidward went through extreme lengths just to give him the pizza.
- In "Hall Monitor," the police arrest Mrs. Puff for the actions of SpongeBob just for letting him wear the hat and belt outside the school. They have been shown to punish Mrs. Puff for SpongeBob's crimes in the past as well.
- In "F.U.N.," they all call Plankton a loser saying that he is the most hated thing in Bikini Bottom.
- In "Bubble Buddy," they all try and kill Bubble Buddy due to him doing annoying things that wasn't even intentional (such as using the bathroom for a long time, making a joke about dancing which was mistaken for calling them fat, and even simply washing Pearl's hand). They even tried to take their frustration out on the lifeguard, though Squidward stopped them. It wasn't until they realized that Bubbly Buddy was indeed alive that they let him go.
- In "Grandma's Kisses," they, including Squidward, all make fun of SpongeBob for being kissed by his grandmother, causing him to leave his job without even starting in tears. They later spy on him through his grandmother's window just to get more laughs.
- In "Squirrel Jokes," they force SpongeBob to make offensive jokes about Sandy, and later laugh at her because of it. They even treat her like an idiot.
- In "The Smoking Peanut," the police falsely arrest Patrick for throwing a peanut at Clamu. They later resort to cruel and unusual punishment by allowing crowds to publicly throwing peanuts at him. SpongeBob later admitted that he did it, but they now insisted on hurting both Patrick and SpongeBob, up until the point when they realized that Mr. Krabs was the one who upset Clamu by stealing her pearl.
- In "Squid on Strike," they don't listen to Squidward when he tells them that Mr. Krabs was violating workers rights, and later literally run over him multiple times. A policeman even gives Squidward a ticket for littering even though he was just stomping on his Krusty Krab hat as part of a strike. A teenager also wanted to take SpongeBob's job as fry cook.
- In "The Bully," they attack an old man twice, thinking that he kicked SpongeBob's butt.
- In "Doing Time," the police arrest Mrs. Puff even though SpongeBob was the one who destroyed Bikini Bottom with his bad driving. Since the events in the episode were just her imagination as she was falling from the bridge, it is unknown if these events actually happened.
- In "Party Pooper Pants," they lock SpongeBob out of his house and wreck up the place and even look through his medicine cabinet, and later the police arrest him only because he didn't invite them to his party (obviously not illegal).
- In "Chocolate With Nuts," one of them frantically chases SpongeBob and Patrick across town yelling "CHOCOLATE" repeatedly, and when it finally looks like he is about to kill them he ends up buying all their chocolate instead. In the same episode, another one manipulates SpongeBob and Patrick's good nature and gullibility to get them to spend money when they were trying to make money.
- In "The Great Snail Race," they cheer after Gary crashes onto the wall.
- In "I Had an Accident," a football player slaps Percy's butt in front of SpongeBob, making him cringe. Another person suggests that SpongeBob should enter the 7-mile spanking machine and makes him watch people slap his butt, not noticing SpongeBob's butt injury and making him run away.
- In "Krabby Land," the children are rude to SpongeBob for not being Krabby the Clown and they laugh at him getting injured up to the point where they tore off his limbs and used them as boomerangs. They later assault Krabs and steal his money. Two thugs also force-feed Mr. Krabs lima beans while he was tied up.
- In "The Sponge Who Could Fly," after SpongeBob's failed attempt to fly via kite, he is made a laughing stock as the event makes it to the newspaper. When he says that it's a sad day when someone gets ridiculed for following his dreams, the townsfolk selfishly accuse him of mocking their own dreams and decide to start a riot against him. Later, when he does gain the ability after a prank call, instead of feeling sorry for what they did to SpongeBob, they force him to do a bunch of random tasks that have nothing to do with his new ability. When he tries to give the feverish favor-seekers the slip, they claim that he owes them favors, despite them doing nothing at all for SpongeBob, and chase him so they could force him to do more tasks. SpongeBob is later almost killed when Cannonball Jenkins blasts him, destroying the pants and sending him plummeting to the ground. The people seem as though they are regretted what they have done to him, but they are actually mourning his pants, completely ignoring SpongeBob himself and leaving him with his injuries. This is one of their biggest antagonisms in the series.
- In "Good Neighbors," after Squidward's Security System malfunctions and wrecks havoc on the town, he is held responsible just for being the owner of the house and is sentenced to life in community service. Adding insult to injury, they decide to make him work the only day of the week he has off. They also give SpongeBob and Patrick the same punishment despite them actually putting an end to the rampage.
- In "Wigstruck," they make fun of SpongeBob's new wig, and later start a riot because of it. He is later left betrayed when the entire town starts wearing his wig.
- In "The Thing," they lock Squidward in a zoo as they thought he was an animal. He was also put in the back of a van with a predatory clam.
- In "Squid Wood," they make fun of Squidward for being less talented than Mini Squidward even though they were both doing exactly the same things in the same way, and Mini Squidward was merely a puppet created by SpongeBob.
- In "Fungus Among Us," they get mad at SpongeBob for giving them a disease, and try to pop the bubble containing his disease out of anger, which spreads the fungus more.
- In "Good Ol' Whatshisname," Squidward was sentenced to ten years in prison after stealing a wallet and running a stop sign.
- In "The Krusty Sponge," they scold SpongeBob for not being able to give them a ride on the Krusty Sponge Fun Train despite that the train was peddle powered and caused SpongeBob to get exhausted from the work. They were also oblivious to the fact that he was the real SpongeBob (as he became famous after a good review by a food critic) as they thought he was wearing a costume. Later, when Mr. Krabs was put on trial for poisoning his customers, he was given a jury of his victims instead of his peers.
- In "Picture Day," they threaten to mess up SpongeBob's appearance for picture day.
- In "The Two Faces of Squidward," they invade Squidward's privacy numerous times and even take some of his possessions. They eventually decide to physically assault him.
- In "Banned in Bikini Bottom," they ban Krabby Patties from Bikini Bottom and also closed down the Krusty Krab.
- In "Spongicus," they find Patrick getting mauled by a lion fish entertaining.
- In "Gone," they celebrated National No SpongeBob Day, by abandoning SpongeBob, building a wooden effigy, and burning it to the ground. The entire event was originally meant for just one day, but they left SpongeBob alone in an abandoned Bikini Bottom for weeks to the point of him mentally going insane. This is immediately followed by them leaving Patrick in the same situation.
- In "Sun Bleached," they make fun of SpongeBob and Patrick for not being tan.
- In "Giant Squidward," they force Squidward to do all their work to prove that he is nice, and later run him out of town just because he didn't say bless you when someone sneezed (which he didn't even hear).
- In "Grooming Gary," they force their pets to join a pet show (much to their dismay) and even after they threw a riot, they were still oblivious to their wrongdoings.
- In "SpongeBob SquarePants vs. The Big One," they mistake Sandy as an alien and stab her helmet with a pitchfork.
- In "Porous Pockets," they become friends with SpongeBob only to abuse his generosity after he becomes rich, and keep him away from Patrick. They later ditch him almost instantly when he goes broke.
- In "Ditchin'," they (including Sandy) kept preventing SpongeBob from going back to Boating School. A policeman also arrests a fish for having gummy fish as a snack (the policeman mistake it for being cannibalism even though it was only gummies that were shaped like fish).
- In "No Hat for Pat," they laugh at Patrick's stupidity and even found it entertaining when he was about to get injured. When both Squidward and Patrick were falling towards a pile of urchins, they got mad at Mr. Krabs for having to pay double after only Squidward gets injured. They then strip Mr. Krabs of his clothes and steal their money back even after Mr. Krabs said there were no refunds.
- In "Truth or Square," a customer finds Mr. Krabs' wallet and intends to keep it and the contents to himself rather than return it to its owner.
- In "Tentacle-Vision," they ruin Squidward's TV show by barging into his home (which is illegal) and later kick him out of his own house after robbing him of his show. They then throw a party in it every night causing Squidward to develop insomnia.
- In "Stuck in the Wringer," they scold SpongeBob for yelling at Patrick even though Patrick's stupidity caused SpongeBob to be kicked out of his job, sustain multiple injuries, develop mental illness and even make him unable to eat anything.
- In "Someone's in the Kitchen with Sandy," they make fun of Sandy for being in her underwear in public and later assault her by seeing her as a nudist. They later ignore Plankton's crime of identity theft and the fact that he stole Sandy's fur in the first place and instead arrest Sandy for public nudity. This can be their biggest antagonism in the series.
- In "Keep Bikini Bottom Beautiful," they force Squidward to clean up the garbage around town even though he never actually littered. A police officer also continuously gives out tickets to people for littering, even if they have not littered.
- In "SpongeBob's Last Stand," they boo and throw garbage at SpongeBob and Patrick for protesting against a new highway that was being built. Police officers then came to arrest them for unlicensed use of a sitar, which isn't against the law. The citizens even cheered for their arrest and honored the police officers who made the arrest, who simply ditched both SpongeBob and Patrick in their underwear in the middle of nowhere while leaving them with a mock. They later celebrate the destruction of Jellyfish Fields with a parade. It wasn't until the jellyfish attack Bikini Bottom that they decide to take down the highway.
- In "The Play's The Thing," they force Squidward to put on a play and serve food at the same time and throw hard burned Krabby Patties at him when he is unable to. They later throw burnt Krabby Patties at SpongeBob as well for fun.
- In "Sponge-Cano!," they try to sacrifice Squidward to the volcano for having an ungrateful personality.
- In "The Great Patty Caper," they start to literally tear apart the Krusty Krab and even try to attack Squidward for not getting their Krabby Patties even though Squidward told them many times that they were out. The bank manager later forces Mr. Krabs to pay off the damages to the bank even though SpongeBob and Patrick were the ones who destroyed it.
- In "Drive Thru," they get mad at SpongeBob and Squidward for not delivering food fast enough, and later are seen trying to eat Squidward.
- In "The Googly Artiste," they take away Squidward's art hat, and turn his art down for a pet rock Patrick made. They even destroy Squidward's art.
- In "Fiasco!," the police chase Plankton even outside their jurisdiction to reclaim a newly-made art piece. They later arrest Squidward and SpongeBob despite SpongeBob being held hostage and Squidward actually doing the police a favor by leading them to Plankton. Squidward is later seen still behind bars without even getting a phone call.
- In "Free Samples," they are fooled into buying bad Krabby Patties from Plankton and hence attack the Krusty Krab for it.
- In "Chum Fricassee," they demolish and burn down the Chum Bucket to nothing but rubble after realizing Squidward undercooked their food. To punish him further, they literally use him as a doormat.
- In "Move It or Lose It," they believe an obvious lie that Krabby Patties are dangerous.
- In "Hello Bikini Bottom!," they forcefully take back the money Mr. Krabs got while touring Squidward and SpongeBob. While Mr. Krabs did steal some equipment, some people took his money even though he didn't owe them anything. Also Carper billed him extra "just because" (inferring that Krabs did not owe him that extra money).
- In "Little Yellow Book," they resort to unlawful punishment when Squidward reads SpongeBob's diary even though they read it too. They segregate him, take away his house saying that he violated his loan, and publicly torture him by shackling him and throwing rotten fruit and vegetables at him. They were also laughing at SpongeBob's secrets as well demonstrating their hypocritical side. NOTE: Squidward was the main antagonist, but the Bottomites were minor antagonists mainly due to their disproportionate retribution against Squidward.
- In "It Came From Goo Lagoon," they threaten to destroy the Krusty Krab unless Mr. Krabs gave Plankton the secret formula, and a wife at her wedding was rude to her new husband after goo fell on him.
- The reason Mr. Krabs' antagonism in "One Coarse Meal" is both bolded and underlined is because, while Mr. Krabs probably didn't intend for Plankton to attempt suicide, scaring someone is way too much, and Mr. Krabs thought SpongeBob informed him of Plankton being broke on the street, not about to die to a bus. Also, suicide is generally seen as a grim and dark subject matter, especially for a show aimed at children.
- Patrick's antagonism in "Big Sister Sam" is the first time he has a bitter rivalry toward Squidward, due to caring for his sister, despite him having a blind eye to his sister’s behavior.
- In “Pat the Horse,” Squidward mocks Patrick and helps Mr. Krabs cheat to win the race, which considers him the secondary antagonist of that episode, as Mr. Krabs is the real main antagonist of that episode.